<I am using remix environment to create a contract based on ERC721 open-zeppelin for practicing purposes, i deployed the below smart contract on the EVM and it works fine, when compiling I don't get any errors but 3 warnings in regards to some declarations, after deploying on Rinkeby I tried several times to verify and publish the contract and whenever I do i get the error as showing ion the attached image "Error! Invalid constructor arguments provided. Please verify that they are in ABI-encoded format", could you pls advise how to resolve this issue? -->
Code to reproduce
'
/ Contract based on https://docs.openzeppelin.com/contracts/3.x/erc721
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0;
import "http://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.3/contracts/token/ERC721/ERC721.sol";
import "http://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.3/contracts/access/Ownable.sol";
import "http://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.3/contracts/math/SafeMath.sol";
contract WeirdWhales is ERC721, Ownable {
using SafeMath for uint256;
string public WHALE_PROVENANCE = "";
uint256 public constant MAX_TOKENS = 3350;
uint256 public constant MAX_TOKENS_PER_PURCHASE = 20;
uint256 private price = 25000000000000000; // 0.025 Ether
bool public isSaleActive = true;
constructor() ERC721("WeirdWhales", "WHALE") {}
function setProvenanceHash(string memory _provenanceHash) public onlyOwner {
WHALE_PROVENANCE = _provenanceHash;
}
function reserveTokens(address _to, uint256 _reserveAmount) public onlyOwner {
uint supply = totalSupply();
for (uint i = 0; i < _reserveAmount; i++) {
_safeMint(_to, supply + i);
}
}
function mint(uint256 _count) public payable {
uint256 totalSupply = totalSupply();
require(isSaleActive, "Sale is not active" );
require(_count > 0 && _count < MAX_TOKENS_PER_PURCHASE + 1, "Exceeds maximum tokens you can purchase in a single transaction");
require(totalSupply + _count < MAX_TOKENS + 1, "Exceeds maximum tokens available for purchase");
require(msg.value >= price.mul(_count), "Ether value sent is not correct");
for(uint256 i = 0; i < _count; i++){
_safeMint(msg.sender, totalSupply + i);
}
}
function setBaseURI(string memory _baseURI) public onlyOwner {
_setBaseURI(_baseURI);
}
function flipSaleStatus() public onlyOwner {
isSaleActive = !isSaleActive;
}
function setPrice(uint256 _newPrice) public onlyOwner() {
price = _newPrice;
}
function getPrice() public view returns (uint256){
return price;
}
function withdraw() public onlyOwner {
uint256 balance = address(this).balance;
msg.sender.transfer(balance);
}
function tokensByOwner(address _owner) external view returns(uint256[] memory ) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
}
'
Environment
Remix
