I can not compile a contract in bsc

Hi , it is my first time creating a bsc contract but when I try to compile it , it give me a error
I dont know too much about solidity or remix but I am ready to learn it

CONTRACT (it is not mine, it is copy paste ):

// File: contracts/888.sol

/**

 *Submitted for verification at BscScan.com on 2022-02-07

*/

/**

Telegram : @BrightSideInu

/**

*/

//SPDX-License-Identifier: UNLICENSED

pragma solidity 0.8.6;

abstract contract Context {

    function _msgSender() internal view returns (address payable) {

        return payable(msg.sender);

    }

    function _msgData() internal view returns (bytes memory) {

        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691

        return msg.data;

       

    }

}

interface IERC20 {

  /**

   * @dev Returns the amount of tokens in existence.

   */

  function totalSupply() external view returns (uint256);

  /**

   * @dev Returns the token decimals.

   */

  function decimals() external view returns (uint8);

  /**

   * @dev Returns the token symbol.

   */

  function symbol() external view returns (string memory);

  /**

  * @dev Returns the token name.

  */

  function name() external view returns (string memory);

  /**

   * @dev Returns the bep token owner.

   */

  function getOwner() external view returns (address);

  /**

   * @dev Returns the amount of tokens owned by `account`.

   */

  function balanceOf(address account) external view returns (uint256);

  /**

   * @dev Moves `amount` tokens from the caller's account to `recipient`.

   *

   * Returns a boolean value indicating whether the operation succeeded.

   *

   * Emits a {Transfer} event.

   */

  function transfer(address recipient, uint256 amount) external returns (bool);

  /**

   * @dev Returns the remaining number of tokens that `spender` will be

   * allowed to spend on behalf of `owner` through {transferFrom}. This is

   * zero by default.

   *

   * This value changes when {approve} or {transferFrom} are called.

   */

  function allowance(address _owner, address spender) external view returns (uint256);

  /**

   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.

   *

   * Returns a boolean value indicating whether the operation succeeded.

   *

   * IMPORTANT: Beware that changing an allowance with this method brings the risk

   * that someone may use both the old and the new allowance by unfortunate

   * transaction ordering. One possible solution to mitigate this race

   * condition is to first reduce the spender's allowance to 0 and set the

   * desired value afterwards:

   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729

   *

   * Emits an {Approval} event.

   */

  function approve(address spender, uint256 amount) external returns (bool);

  /**

   * @dev Moves `amount` tokens from `sender` to `recipient` using the

   * allowance mechanism. `amount` is then deducted from the caller's

   * allowance.

   *

   * Returns a boolean value indicating whether the operation succeeded.

   *

   * Emits a {Transfer} event.

   */

  function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

  /**

   * @dev Emitted when `value` tokens are moved from one account (`from`) to

   * another (`to`).

   *

   * Note that `value` may be zero.

   */

  event Transfer(address indexed from, address indexed to, uint256 value);

  /**

   * @dev Emitted when the allowance of a `spender` for an `owner` is set by

   * a call to {approve}. `value` is the new allowance.

   */

  event Approval(address indexed owner, address indexed spender, uint256 value);

}

/**

 * @dev Wrappers over Solidity's arithmetic operations with added overflow

 * checks.

 *

 * Arithmetic operations in Solidity wrap on overflow. This can easily result

 * in bugs, because programmers usually assume that an overflow raises an

 * error, which is the standard behavior in high level programming languages.

 * `SafeMath` restores this intuition by reverting the transaction when an

 * operation overflows.

 *

 * Using this library instead of the unchecked operations eliminates an entire

 * class of bugs, so it's recommended to use it always.

 */

library SafeMath {

    /**

     * @dev Returns the addition of two unsigned integers, reverting on

     * overflow.

     *

     * Counterpart to Solidity's `+` operator.

     *

     * Requirements:

     *

     * - Addition cannot overflow.

     */

    function add(uint256 a, uint256 b) internal pure returns (uint256) {

        uint256 c = a + b;

        require(c >= a, "SafeMath: addition overflow");

        return c;

    }

    /**

     * @dev Returns the subtraction of two unsigned integers, reverting on

     * overflow (when the result is negative).

     *

     * Counterpart to Solidity's `-` operator.

     *

     * Requirements:

     *

     * - Subtraction cannot overflow.

     */

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {

        return sub(a, b, "SafeMath: subtraction overflow");

    }

    /**

     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on

     * overflow (when the result is negative).

     *

     * Counterpart to Solidity's `-` operator.

     *

     * Requirements:

     *

     * - Subtraction cannot overflow.

     */

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {

        require(b <= a, errorMessage);

        uint256 c = a - b;

        return c;

    }

    /**

     * @dev Returns the multiplication of two unsigned integers, reverting on

     * overflow.

     *

     * Counterpart to Solidity's `*` operator.

     *

     * Requirements:

     *

     * - Multiplication cannot overflow.

     */

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {

        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the

        // benefit is lost if 'b' is also tested.

        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522

        if (a == 0) {

            return 0;

        }

        uint256 c = a * b;

        require(c / a == b, "SafeMath: multiplication overflow");

        return c;

    }

    /**

     * @dev Returns the integer division of two unsigned integers. Reverts on

     * division by zero. The result is rounded towards zero.

     *

     * Counterpart to Solidity's `/` operator. Note: this function uses a

     * `revert` opcode (which leaves remaining gas untouched) while Solidity

     * uses an invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function div(uint256 a, uint256 b) internal pure returns (uint256) {

        return div(a, b, "SafeMath: division by zero");

    }

    /**

     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on

     * division by zero. The result is rounded towards zero.

     *

     * Counterpart to Solidity's `/` operator. Note: this function uses a

     * `revert` opcode (which leaves remaining gas untouched) while Solidity

     * uses an invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {

        require(b > 0, errorMessage);

        uint256 c = a / b;

        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;

    }

    /**

     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),

     * Reverts when dividing by zero.

     *

     * Counterpart to Solidity's `%` operator. This function uses a `revert`

     * opcode (which leaves remaining gas untouched) while Solidity uses an

     * invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {

        return mod(a, b, "SafeMath: modulo by zero");

    }

    /**

     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),

     * Reverts with custom message when dividing by zero.

     *

     * Counterpart to Solidity's `%` operator. This function uses a `revert`

     * opcode (which leaves remaining gas untouched) while Solidity uses an

     * invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {

        require(b != 0, errorMessage);

        return a % b;

    }

}

library Address {

    function isContract(address account) internal view returns (bool) {

        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts

        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned

        // for accounts without code, i.e. `keccak256('')`

        bytes32 codehash;

        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;

        // solhint-disable-next-line no-inline-assembly

        assembly { codehash := extcodehash(account) }

        return (codehash != accountHash && codehash != 0x0);

    }

    function sendValue(address payable recipient, uint256 amount) internal {

        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value

        (bool success, ) = recipient.call{ value: amount }("");

        require(success, "Address: unable to send value, recipient may have reverted");

    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {

        return functionCall(target, data, "Address: low-level call failed");

    }

    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {

        return _functionCallWithValue(target, data, 0, errorMessage);

    }

    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {

        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");

    }

    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {

        require(address(this).balance >= value, "Address: insufficient balance for call");

        return _functionCallWithValue(target, data, value, errorMessage);

    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {

        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls

        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);

        if (success) {

            return returndata;

        } else {

            // Look for revert reason and bubble it up if present

            if (returndata.length > 0) {

                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly

                assembly {

                    let returndata_size := mload(returndata)

                    revert(add(32, returndata), returndata_size)

                }

            } else {

                revert(errorMessage);

            }

        }

    }

}

interface IUniswapV2Factory {

    event PairCreated(address indexed token0, address indexed token1, address lpPair, uint);

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address lpPair);

    function allPairs(uint) external view returns (address lpPair);

    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address lpPair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;

}

interface IUniswapV2Pair {

    event Approval(address indexed owner, address indexed spender, uint value);

    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint);

    function balanceOf(address owner) external view returns (uint);

    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);

    function transfer(address to, uint value) external returns (bool);

    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);

    event Swap(

        address indexed sender,

        uint amount0In,

        uint amount1In,

        uint amount0Out,

        uint amount1Out,

        address indexed to

    );

    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);

    function factory() external view returns (address);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

    function price0CumulativeLast() external view returns (uint);

    function price1CumulativeLast() external view returns (uint);

    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);

    function burn(address to) external returns (uint amount0, uint amount1);

    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;

}

interface IUniswapV2Router01 {

    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(

        address tokenA,

        address tokenB,

        uint amountADesired,

        uint amountBDesired,

        uint amountAMin,

        uint amountBMin,

        address to,

        uint deadline

    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(

        address token,

        uint amountTokenDesired,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline

    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(

        address tokenA,

        address tokenB,

        uint liquidity,

        uint amountAMin,

        uint amountBMin,

        address to,

        uint deadline

    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline

    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(

        address tokenA,

        address tokenB,

        uint liquidity,

        uint amountAMin,

        uint amountBMin,

        address to,

        uint deadline,

        bool approveMax, uint8 v, bytes32 r, bytes32 s

    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETHWithPermit(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline,

        bool approveMax, uint8 v, bytes32 r, bytes32 s

    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(

        uint amountIn,

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external returns (uint[] memory amounts);

    function swapTokensForExactTokens(

        uint amountOut,

        uint amountInMax,

        address[] calldata path,

        address to,

        uint deadline

    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)

    external

    payable

    returns (uint[] memory amounts);

    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)

    external

    returns (uint[] memory amounts);

    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)

    external

    returns (uint[] memory amounts);

    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)

    external

    payable

    returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);

    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);

    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);

    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);

    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);

}

interface IUniswapV2Router02 is IUniswapV2Router01 {

    function removeLiquidityETHSupportingFeeOnTransferTokens(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline

    ) external returns (uint amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(

        address token,

        uint liquidity,

        uint amountTokenMin,

        uint amountETHMin,

        address to,

        uint deadline,

        bool approveMax, uint8 v, bytes32 r, bytes32 s

    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(

        uint amountIn,

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(

        uint amountIn,

        uint amountOutMin,

        address[] calldata path,

        address to,

        uint deadline

    ) external;

}

abstract contract Ownable is Context {

    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {

        address msgSender = _msgSender();

        _owner = msgSender;

        emit OwnershipTransferred(address(0), msgSender);

    }

    function owner() public view returns (address) {

        return _owner;

    }

    modifier onlyOwner() {

        require(_owner == _msgSender(), "Ownable: caller is not the owner");

        _;

    }

    function renounceOwnership() public virtual onlyOwner {

        emit OwnershipTransferred(_owner, address(0));

        _owner = address(0);

    }

    function transferOwnership(address newOwner) public virtual onlyOwner {

        require(newOwner != address(0), "Ownable: new owner is the zero address");

       

        emit OwnershipTransferred(_owner, newOwner);

        _owner = newOwner;

    }

   

}

contract BrightSideInu is Context, IERC20, Ownable {

    using SafeMath for uint256;

    using Address for address;

    mapping (address => uint256) private _rOwned;

    mapping (address => uint256) private _tOwned;

    mapping (address => mapping (address => uint256)) private _allowances;

    mapping (address => bool) private _isExcludedFromFee;

    mapping (address => bool) private _isExcluded;

    address[] private _excluded;

    mapping (address => bool) private _isBlacklisted;

    mapping (address => bool) private _liquidityHolders;

   

    uint private startingSupply = 1_000_000; //1 Quadrillion, underscores aid readability

   

    uint256 private constant MAX = ~uint256(0);

    uint8 private _decimals = 9;

    uint256 private _decimalsMul = _decimals;

    uint256 private _tTotal = startingSupply * 10**_decimalsMul;

    uint256 private _rTotal = (MAX - (MAX % _tTotal));

    uint256 private _tFeeTotal;

    string private _name = "Bright Side Inu";

    string private _symbol = "Bright Side Inu";

   

    uint256 public _reflectFee = 0; // All taxes are divided by 100 for more accuracy.

    uint256 private _previousReflectFee = _reflectFee;

    uint256 public _boostedReflectFee = 0;

   

    uint256 public _liquidityFee = 200; // All taxes are divided by 100 for more accuracy.

    uint256 private _previousLiquidityFee = _liquidityFee;

    uint256 public _boostedLiquidityFee = 200;

    uint256 public _marketingFee = 800; // All taxes are divided by 100 for more accuracy.

    uint256 private _previousMarketingFee = _marketingFee;

    uint256 public _boostedMarketingFee = 800;

    uint256 public _buyBackFee = 0;

    uint256 private _previousBuyBackFee = _buyBackFee;

    uint256 public _boostedBuyBackFee = 0;

    uint256 public _devFee = 0;  

    uint256 private _previousDevFee = _devFee;

    uint256 public _boostedDevFee = 0;

    uint256 private masterTaxDivisor = 10000; // All tax calculations are divided by this number.

    uint256 private maximumTaxesPercent = 10000;

    IUniswapV2Router02 public dexRouter;

    address public lpPair;

    // PCS ROUTER

    address private _routerAddress = 0xD99D1c33F9fC3444f8101754aBC46c52416550D1;

    address public burnAddress = 0xEC5d1FC384f7ee435Ac68EE445522b6eF51fAd16;

    address payable private _marketingWallet = payable(0xEC5d1FC384f7ee435Ac68EE445522b6eF51fAd16);

    address payable private _devWallet = payable(0xEC5d1FC384f7ee435Ac68EE445522b6eF51fAd16);

   

    bool inSwapAndLiquify;

    bool public swapAndLiquifyEnabled = true;

    bool public buyBackEnabled = false;

    uint256 public buyBackSellLimit = (_tTotal * 2) / 100;

    uint256 public buyBackAmount = 1 * 10**18;

    bool public boostedTaxes = true;

    bool public boosted = false;

   

    // Max TX amount is 1% of the total supply.

    uint256 private maxTxPercent = 1000; // Less fields to edit

    uint256 private maxTxDivisor = 1000;

    uint256 private _maxTxAmount = (_tTotal * maxTxPercent) / maxTxDivisor;

    uint256 private _previousMaxTxAmount = _maxTxAmount;

    uint256 public maxTxAmountUI = (startingSupply * maxTxPercent) / maxTxDivisor; // Actual amount for UI's

   

     // Max TX Wallet is 100% of the total supply.

    uint256 private maxWalletPercent = 20; // Less fields to edit

    uint256 private maxWalletDivisor = 1000;

    uint256 private _maxWalletAmount = (_tTotal * maxWalletPercent) / maxWalletDivisor;

    uint256 private _previousMaxWalletAmount = _maxWalletAmount;

    uint256 public maxWalletAmountUI = (startingSupply * maxWalletPercent) / maxWalletDivisor; // Actual amount for UI's

   

    uint256 public percentToSell = 50;

   

    // 0.05% of Total Supply

    uint256 private numTokensSellToAddToLiquidity = (_tTotal * percentToSell) / 10000;

   

    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);

    event SwapAndLiquifyEnabledUpdated(bool enabled);

    event SwapAndLiquify(

        uint256 tokensSwapped,

        uint256 ethReceived,

        uint256 tokensIntoLiqudity

    );

    event SniperCaught(address sniperAddress);

    event BuyBackEnabledUpdated(bool enabled);

        event SwapETHForTokens(

        uint256 amountIn,

        address[] path

    );

    event SwapTokensForETH(

        uint256 amountIn,

        address[] path

    );

   

    modifier lockTheSwap {

        inSwapAndLiquify = true;

        _;

        inSwapAndLiquify = false;

    }

   

    constructor () {

        _tOwned[_msgSender()] = _tTotal;

        _rOwned[_msgSender()] = _rTotal;

        IUniswapV2Router02 _dexRouter = IUniswapV2Router02(_routerAddress);

        lpPair = IUniswapV2Factory(_dexRouter.factory())

            .createPair(address(this), _dexRouter.WETH());

        dexRouter = _dexRouter;

       

        _isExcludedFromFee[owner()] = true;

        _isExcludedFromFee[address(this)] = true;

        _liquidityHolders[owner()] = true;

        _isExcluded[address(this)] = true;

        _excluded.push(address(this));

        _isExcluded[owner()] = true;

        _excluded.push(owner());

        _isExcluded[burnAddress] = true;

        _excluded.push(burnAddress);

        _isExcluded[lpPair] = true;

        _excluded.push(lpPair);

        // DxLocker Address (BSC)

        _isExcludedFromFee[0x2D045410f002A95EFcEE67759A92518fA3FcE677] = true;

        _isExcluded[0x2D045410f002A95EFcEE67759A92518fA3FcE677] = true;

        _excluded.push(0x2D045410f002A95EFcEE67759A92518fA3FcE677);

        // Approve the owner for PancakeSwap, timesaver.

        _approve(_msgSender(), _routerAddress, _tTotal);

        emit Transfer(address(0), _msgSender(), _tTotal);

    }

    function totalSupply() external view override returns (uint256) { return _tTotal; }

    function decimals() external view override returns (uint8) { return _decimals; }

    function symbol() external view override returns (string memory) { return _symbol; }

    function name() external view override returns (string memory) { return _name; }

    function getOwner() external view override returns (address) { return owner(); }

    function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }

    function balanceOf(address account) public view override returns (uint256) {

        if (_isExcluded[account]) return _tOwned[account];

        return tokenFromReflection(_rOwned[account]);

    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {

        _transfer(_msgSender(), recipient, amount);

        return true;

    }

    function approve(address spender, uint256 amount) public override returns (bool) {

        _approve(_msgSender(), spender, amount);

        return true;

    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {

        _transfer(sender, recipient, amount);

        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));

        return true;

    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {

        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));

        return true;

    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {

        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));

        return true;

    }

    function setNewRouter(address newRouter) public onlyOwner() {

        IUniswapV2Router02 _newRouter = IUniswapV2Router02(newRouter);

        address get_pair = IUniswapV2Factory(_newRouter.factory()).getPair(address(this), _newRouter.WETH());

        if (get_pair == address(0)) {

            lpPair = IUniswapV2Factory(_newRouter.factory()).createPair(address(this), _newRouter.WETH());

        }

        else {

            lpPair = get_pair;

        }

        dexRouter = _newRouter;

    }

    function isExcludedFromReward(address account) public view returns (bool) {

        return _isExcluded[account];

    }

    function isExcludedFromFee(address account) public view returns(bool) {

        return _isExcludedFromFee[account];

    }

   

    function setTaxes(uint256 reflectFee, uint256 liquidityFee, uint256 marketingFee, uint256 buyBackFee, uint256 devFee) external onlyOwner() {

        require(reflectFee + liquidityFee + marketingFee + buyBackFee + devFee <= maximumTaxesPercent);

        _reflectFee = reflectFee;

        _liquidityFee = liquidityFee;

        _marketingFee = marketingFee;

        _buyBackFee = buyBackFee;

        _devFee = devFee;

    }

    function setBoostedTaxes(uint256 reflectFee, uint256 liquidityFee, uint256 marketingFee, uint256 buyBackFee, uint256 devFee) external onlyOwner() {

        require(reflectFee + liquidityFee + marketingFee + buyBackFee + devFee <= maximumTaxesPercent);

        _boostedReflectFee = reflectFee;

        _boostedLiquidityFee = liquidityFee;

        _boostedMarketingFee = marketingFee;

        _boostedBuyBackFee = buyBackFee;

        _boostedDevFee = devFee;

    }

    function setMaxTxPercent(uint256 percent, uint256 divisor) external onlyOwner() {

        require(divisor <= 10000); // Cannot set lower than 0.01%

        _maxTxAmount = _tTotal.mul(percent).div(divisor);

        maxTxAmountUI = startingSupply.mul(percent).div(divisor);

    }

   

    function setMaxWallet(uint256 percent, uint256 divisor) external onlyOwner() {

        require(divisor <= 1000); // Cannot set lower than 0.1%

        _maxWalletAmount = _tTotal.mul(percent).div(divisor);

        maxWalletAmountUI = startingSupply.mul(percent).div(divisor);

    }

   

    function setPercentToSell(uint256 percent) external onlyOwner() {

        percentToSell = percent;

        numTokensSellToAddToLiquidity = (_tTotal * percentToSell) / 10000;

    }

    function setMarketingWallet(address payable newWallet) external onlyOwner {

        require(_marketingWallet != newWallet, "Wallet already set!");

        _marketingWallet = payable(newWallet);

    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {

        swapAndLiquifyEnabled = _enabled;

        emit SwapAndLiquifyEnabledUpdated(_enabled);

    }

    function setBuyBackEnabled(bool _enabled) public onlyOwner {

        buyBackEnabled = _enabled;

        emit BuyBackEnabledUpdated(_enabled);

    }

   

    function setBuyBackSellLimit(uint256 limit) external onlyOwner() {

        buyBackSellLimit = limit * 10**_decimalsMul;

    }

    function setBuyBackAmount(uint256 amount, uint256 multiplier) external onlyOwner() {

        buyBackAmount = amount * 10**multiplier;

    }

    function setBoostedTaxesEnabled(bool enabled) external onlyOwner() {

        if (boostedTaxes != enabled)

            boostedTaxes = enabled;

    }

    function setBlacklistAddress(address account, bool enabled) external onlyOwner() {

        if (_isBlacklisted[account] != enabled)

            _isBlacklisted[account] = enabled;

    }

    function excludeFromFee(address account) public onlyOwner {

        _isExcludedFromFee[account] = true;

    }

   

    function includeInFee(address account) external onlyOwner {

        _isExcludedFromFee[account] = false;

    }

    function totalFees() public view returns (uint256) {

        return _tFeeTotal;

    }

    function _hasLimits(address from, address to) private view returns (bool) {

        return from != owner()

            && to != owner()

            && !_liquidityHolders[to]

            && !_liquidityHolders[from]

            && to != burnAddress

            && to != address(0);

    }

    function deliver(uint256 tAmount) public {

        address sender = _msgSender();

        require(!_isExcluded[sender], "Excluded addresses cannot call this function");

        (uint256 rAmount,,,,,) = _getValues(tAmount);

        _rOwned[sender] = _rOwned[sender].sub(rAmount);

        _rTotal = _rTotal.sub(rAmount);

        _tFeeTotal = _tFeeTotal.add(tAmount);

    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {

        require(tAmount <= _tTotal, "Amount must be less than supply");

        if (!deductTransferFee) {

            (uint256 rAmount,,,,,) = _getValues(tAmount);

            return rAmount;

        } else {

            (,uint256 rTransferAmount,,,,) = _getValues(tAmount);

            return rTransferAmount;

        }

    }

    function tokenFromReflection(uint256 rAmount) public view returns(uint256) {

        require(rAmount <= _rTotal, "Amount must be less than total reflections");

        uint256 currentRate =  _getRate();

        return rAmount.div(currentRate);

    }

    function excludeFromReward(address account) public onlyOwner() {

        // require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');

        require(!_isExcluded[account], "Account is already excluded");

        if(_rOwned[account] > 0) {

            _tOwned[account] = tokenFromReflection(_rOwned[account]);

        }

        _isExcluded[account] = true;

        _excluded.push(account);

    }

    function includeInReward(address account) external onlyOwner() {

        require(_isExcluded[account], "Account is already excluded");

        for (uint256 i = 0; i < _excluded.length; i++) {

            if (_excluded[i] == account) {

                _excluded[i] = _excluded[_excluded.length - 1];

                _tOwned[account] = 0;

                _isExcluded[account] = false;

                _excluded.pop();

                break;

            }

        }

    }

   

     //to recieve ETH from dexRouter when swaping

    receive() external payable {}

    function _approve(address owner, address spender, uint256 amount) private {

        require(owner != address(0), "ERC20: approve from the zero address");

        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;

        emit Approval(owner, spender, amount);

    }

    function _transfer(

        address from

,        address to,

        uint256 amount

    ) private {

        require(from != address(0), "ERC20: transfer from the zero address");

        require(to != address(0), "ERC20: transfer to the zero address");

        require(amount > 0, "Transfer amount must be greater than zero");

        require(!_isBlacklisted[to], "Blacklisted address.");

        require(!_isBlacklisted[from], "Blacklisted address.");

        if(_hasLimits(from, to))

            require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");

        if (_hasLimits(from, to)

            && to != _routerAddress

            && to != lpPair

        ) {

            uint256 contractBalanceRecepient = balanceOf(to);

            require(contractBalanceRecepient + amount <= _maxWalletAmount, "Transfer amount exceeds the maxWalletSize.");

            }

        uint256 contractTokenBalance = balanceOf(address(this));

       

        if(contractTokenBalance >= _maxTxAmount)

        {          

            contractTokenBalance = _maxTxAmount;

        }

       

        bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;

        if (!inSwapAndLiquify

            && to == lpPair

            && swapAndLiquifyEnabled

        ) {

            if (overMinTokenBalance) {

                contractTokenBalance = numTokensSellToAddToLiquidity;

                swapAndLiquify(contractTokenBalance);

            }

            if (buyBackEnabled

                && address(this).balance > buyBackAmount

                && amount >= buyBackSellLimit

            ) {

                buyBackTokens(buyBackAmount);

            }

        }

       

        bool takeFee = true;

       

        if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){

            takeFee = false;

        }

       

        _tokenTransfer(from,to,amount,takeFee);

    }

    function buyBackTokens(uint256 amount) private lockTheSwap {

        if (amount > 0) {

            swapETHForTokens(amount);

        }

    }

    function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {

        uint256 totalBNBFees = _marketingFee.add(_liquidityFee).add(_buyBackFee).add(_devFee);

        if (totalBNBFees == 0)

            return;

        uint256 toMarketing = contractTokenBalance.mul(_marketingFee).div(totalBNBFees);

        uint256 toBuyBack = contractTokenBalance.mul(_buyBackFee).div(totalBNBFees);

        uint256 toDev = contractTokenBalance.mul(_devFee).div(totalBNBFees);

        uint256 toLiquify = contractTokenBalance.sub(toMarketing).sub(toBuyBack).sub(toDev);

        // split the contract balance into halves

        uint256 half = toLiquify.div(2);

        uint256 otherHalf = toLiquify.sub(half);

        // capture the contract's current ETH balance.

        // this is so that we can capture exactly the amount of ETH that the

        // swap creates, and not make the liquidity event include any ETH that

        // has been manually sent to the contract

        uint256 initialBalance = address(this).balance;

        // swap tokens for ETH

        uint256 toSwapForEth = half.add(toMarketing).add(toBuyBack).add(toDev);

        swapTokensForEth(toSwapForEth); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered

        // how much ETH did we just swap into?

        uint256 fromSwap = address(this).balance.sub(initialBalance);

        uint256 liquidityBalance = fromSwap.mul(half).div(toSwapForEth);

        uint256 buyBackBalance = fromSwap.mul(toBuyBack).div(toSwapForEth);

        uint256 devBalance = fromSwap.mul(toDev).div(toSwapForEth);

        uint256 marketingBalance = fromSwap.sub(liquidityBalance.add(devBalance).add(buyBackBalance));

        // add liquidity to uniswap

        addLiquidity(otherHalf, liquidityBalance);

        emit SwapAndLiquify(half, liquidityBalance, otherHalf);

        transferEthOut(devBalance, marketingBalance);

    }

    function transferEthOut(uint256 devBalance, uint256 marketingBalance) internal {

        _devWallet.transfer(devBalance);

        _marketingWallet.transfer(marketingBalance);

    }

   

    function swapETHForTokens(uint256 amount) private {

        // generate the uniswap pair path of token -> weth

        address[] memory path = new address[](2);

        path[0] = dexRouter.WETH();

        path[1] = address(this);

        // make the swap

        dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(

            0, // accept any amount of Tokens

            path,

            burnAddress, // Burn address

            block.timestamp.add(300)

        );

       

        emit SwapETHForTokens(amount, path);

    }

    function swapTokensForEth(uint256 tokenAmount) private {

        // generate the uniswap lpPair path of token -> weth

        address[] memory path = new address[](2);

        path[0] = address(this);

        path[1] = dexRouter.WETH();

        _approve(address(this), address(dexRouter), tokenAmount);

        // make the swap

        dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(

            tokenAmount,

            0, // accept any amount of ETH

            path,

            address(this),

            block.timestamp

        );

    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {

        // approve token transfer to cover all possible scenarios

        _approve(address(this), address(dexRouter), tokenAmount);

        // add the liquidity

        dexRouter.addLiquidityETH{value: ethAmount}(

            address(this),

            tokenAmount,

            0, // slippage is unavoidable

            0, // slippage is unavoidable

            burnAddress,

            block.timestamp

        );

    }

    //this method is responsible for taking all fee, if takeFee is true

    function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {

        if(!takeFee)

            removeAllFee();

        else if (boostedTaxes && recipient == lpPair){

            boosted = true;

            boostSellTaxes();

        }

       

        _finalizeTransfer(sender, recipient, amount);

       

        if(!takeFee || boosted)

            restoreAllFee();

    }

    function _finalizeTransfer(address sender, address recipient, uint256 tAmount) private {

        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);

        _rOwned[sender] = _rOwned[sender].sub(rAmount);

        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);

        if (_isExcluded[sender] && !_isExcluded[recipient]) {

            _tOwned[sender] = _tOwned[sender].sub(tAmount);

        } else if (!_isExcluded[sender] && _isExcluded[recipient]) {

            _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);  

        } else if (_isExcluded[sender] && _isExcluded[recipient]) {

            _tOwned[sender] = _tOwned[sender].sub(tAmount);

            _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);

        }

        if (tLiquidity > 0)

            _takeLiquidity(sender, tLiquidity);

        if (rFee > 0 || tFee > 0)

            _takeReflect(rFee, tFee);

        emit Transfer(sender, recipient, tTransferAmount);

    }

    function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {

        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);

        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());

        return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);

    }

    function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {

        uint256 tFee = calculateTaxFee(tAmount);

        uint256 tLiquidity = calculateLiquidityFee(tAmount);

        uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);

        return (tTransferAmount, tFee, tLiquidity);

    }

    function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {

        uint256 rAmount = tAmount.mul(currentRate);

        uint256 rFee = tFee.mul(currentRate);

        uint256 rLiquidity = tLiquidity.mul(currentRate);

        uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);

        return (rAmount, rTransferAmount, rFee);

    }

    function _getRate() private view returns(uint256) {

        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();

        return rSupply.div(tSupply);

    }

    function _getCurrentSupply() private view returns(uint256, uint256) {

        uint256 rSupply = _rTotal;

        uint256 tSupply = _tTotal;      

        for (uint256 i = 0; i < _excluded.length; i++) {

            if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);

            rSupply = rSupply.sub(_rOwned[_excluded[i]]);

            tSupply = tSupply.sub(_tOwned[_excluded[i]]);

        }

        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);

        return (rSupply, tSupply);

    }

    function _takeReflect(uint256 rFee, uint256 tFee) private {

        _rTotal = _rTotal.sub(rFee);

        _tFeeTotal = _tFeeTotal.add(tFee);

    }

   

    function _takeLiquidity(address sender, uint256 tLiquidity) private {

        uint256 currentRate =  _getRate();

        uint256 rLiquidity = tLiquidity.mul(currentRate);

        _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);

        if(_isExcluded[address(this)])

            _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);

        emit Transfer(sender, address(this), tLiquidity); // Transparency is the key to success.

    }

    function calculateTaxFee(uint256 _amount) private view returns (uint256) {

        return _amount.mul(_reflectFee).div(masterTaxDivisor);

    }

    function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {

        return _amount.mul(_liquidityFee.add(_buyBackFee).add(_marketingFee).add(_devFee)).div(masterTaxDivisor);

    }

    function removeAllFee() internal {

        if(_reflectFee == 0

           && _liquidityFee == 0

           && _buyBackFee == 0

           && _marketingFee == 0

           && _devFee == 0

        ) return;

       

        _previousReflectFee = _reflectFee;

        _previousLiquidityFee = _liquidityFee;

        _previousBuyBackFee = _buyBackFee;

        _previousMarketingFee = _marketingFee;

        _previousDevFee = _devFee;

       

        _reflectFee = 0;

        _liquidityFee = 0;

        _buyBackFee = 0;

        _marketingFee = 0;

        _devFee = 0;

    }

   

    function restoreAllFee() internal {

        _reflectFee = _previousReflectFee;

        _liquidityFee = _previousLiquidityFee;

        _buyBackFee = _previousBuyBackFee;

        _marketingFee = _previousMarketingFee;

        _devFee = _previousDevFee;

        if (boosted == true)

            boosted = false;

    }

    function boostSellTaxes() internal {

        _previousReflectFee = _reflectFee;

        _previousLiquidityFee = _liquidityFee;

        _previousBuyBackFee = _buyBackFee;

        _previousMarketingFee = _marketingFee;

        _previousDevFee = _devFee;

        _reflectFee = _boostedReflectFee;

        _liquidityFee = _boostedLiquidityFee;

        _buyBackFee = _boostedBuyBackFee;

        _marketingFee = _boostedMarketingFee;

        _devFee = _boostedDevFee;

    }

}

ERROR : ↓↓↓↓

Hi, welcome to the community! :wave:

It seems like you want to verify your contracts, and just like the error message, you should use optimizer, just like this:

And if you want to verify your contracts, maybe you can have a look at this tutorial:
How to verify a contract on Etherscan/BscScan/PolygonScan

And for the next time, please search at the forum at first, and then ask questions, thanks!
How do I ask a good question? - General / Meta - OpenZeppelin Community

1 Like

ty bro , it was usefull

1 Like