Still geting problems to verify this contract

[WizardDev]

Hey guys! I'm unable to verify my smart contract unfortunately.
Could you please point me to what I might be doing wrong?

Network: Goerli
Contract Address: 0x738fef1663705af5ff1a7dc260527d109f784715
Compiler: 0.8.17
Optimization: Yes

//SPDX-License-Identifier: MIT
                                                            
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./opensea-operator-filterer/DefaultOperatorFilterer.sol";

contract TheLastChance is DefaultOperatorFilterer, Ownable, ERC721Enumerable {
    constructor() ERC721("TheLastChance", "TLC") {}

    uint256 public maxSupply = 999;
    uint256 minted;
    string public baseURI;
    string public baseExtension = ".json";
    bool public paused = false;
    mapping(uint256 => address) public tokenOwner;
    mapping(address => uint256) public tokenBalance;


    function mint(uint256 _tokenID) public payable {
    require(msg.value >= 0.005 ether, "Insufficient payment.");
    require(minted < maxSupply, "Max Supply is 999.");
    require(_tokenID < maxSupply, "Your character ID should be between 0-998.");
    require(!_exists(_tokenID), "Another user has claimed this character.");
    require(!paused, "The Last Chance is not live, please wait.");

     minted++;
    _safeMint(msg.sender, _tokenID);
    }

    function _baseURI() internal view virtual override returns (string memory) {
        return baseURI;
    }

    function setBaseURI(string memory _newBaseURI) public onlyOwner {
        baseURI = string(abi.encodePacked(_newBaseURI));
    }

    function tokenURI(uint256 tokenId)
        public
        view
        virtual
        override
        returns (string memory)
    {
        _exists(tokenId);

        return
            bytes(baseURI).length > 0
                ? string(
                    abi.encodePacked(
                        baseURI,
                        Strings.toString(tokenId),
                        ".json"
                    )
                )
                : "";
    }

    function setApprovalForAll(address operator, bool approved)
        public
        override(ERC721, IERC721)
        onlyAllowedOperatorApproval(operator)
    {
        super.setApprovalForAll(operator, approved);
    }


    function approve(address operator, uint256 tokenId)
        public
        override(ERC721, IERC721)
        onlyAllowedOperatorApproval(operator)
    {
        super.approve(operator, tokenId);
    }

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public override(ERC721, IERC721) onlyAllowedOperator(from) {
        super.transferFrom(from, to, tokenId);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public override(ERC721, IERC721) onlyAllowedOperator(from) {
        super.safeTransferFrom(from, to, tokenId);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) public override(ERC721, IERC721) onlyAllowedOperator(from) {
        super.safeTransferFrom(from, to, tokenId, data);
    }

    function withdraw() external onlyOwner {
        (bool success, ) = payable(msg.sender).call{
            value: address(this).balance
        }("");
        require(success, "Transfer failed.");
    }

    function setPaused(bool _state) public onlyOwner {
        paused = _state;
    }
  
}

This is how I configured it to make the verification, but I keep getting an error.

See below the error I get now:

Compiler debug log:
Error! Unable to generate Contract ByteCode and ABI (General Exception, unable to get compiled [bytecode])
For troubleshooting, you can try compiling your source code with the Remix - Solidity IDE and check for exceptions

Compiler Warning(s):

ParserError: Source "lib/Constants.sol" not found: File import callback not supported
--> DefaultOperatorFilterer.sol:5:1:
|
5 | import {CANONICAL_CORI_SUBSCRIPTION} from "./lib/Constants.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "extensions/IERC721Metadata.sol" not found: File import callback not supported
--> ERC721.sol:8:1:
|
8 | import "./extensions/IERC721Metadata.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "utils/Address.sol" not found: File import callback not supported
--> ERC721.sol:9:1:
|
9 | import "../../utils/Address.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "utils/Context.sol" not found: File import callback not supported
--> ERC721.sol:10:1:
|
10 | import "../../utils/Context.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "utils/Strings.sol" not found: File import callback not supported
--> ERC721.sol:11:1:
|
11 | import "../../utils/Strings.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "utils/introspection/ERC165.sol" not found: File import callback not supported
--> ERC721.sol:12:1:
|
12 | import "../../utils/introspection/ERC165.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "utils/introspection/IERC165.sol" not found: File import callback not supported
--> IERC721.sol:6:1:
|
6 | import "../../utils/introspection/IERC165.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "lib/Constants.sol" not found: File import callback not supported
--> OperatorFilterer.sol:5:1:
|
5 | import {CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS} from "./lib/Constants.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "utils/Context.sol" not found: File import callback not supported
--> Ownable.sol:6:1:
|
6 | import "../utils/Context.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "math/Math.sol" not found: File import callback not supported
--> Strings.sol:6:1:
|
6 | import "./math/Math.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol" not found: File import callback not supported
--> TheLastChance.sol:4:1:
|
4 | import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "@openzeppelin/contracts/access/Ownable.sol" not found: File import callback not supported
--> TheLastChance.sol:5:1:
|
5 | import "@openzeppelin/contracts/access/Ownable.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ParserError: Source "opensea-operator-filterer/DefaultOperatorFilterer.sol" not found: File import callback not supported
--> TheLastChance.sol:6:1:
|
6 | import "./opensea-operator-filterer/DefaultOperatorFilterer.sol"
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[Keerthana_Ramalingam]

Try to flatten your code and verify

[JulissaDantes]

Have you had a chance to review our verification guide available at

How to verify a contract on Etherscan/BscScan/PolygonScan

Make sure to read this post before asking a question about verification. If your issue is not addressed here, just leave a comment below. If you want to pay someone to do the verification for you, create a post in Developer Wanted. This guide applies to all Etherscan instances, including all of the following as well as their testnet explorers: etherscan.io (Ethereum) bscscan.com (Binance Smart Chain) polygonscan.com (Polygon) snowtrace.io (Avalanche) Recommendations Practice in testnet Be…

If so, in order to better assist and guide you, could you please provide us with some additional details on what you have tried and the outcome you experienced?