I have the same error, now it’s OK:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
contract HarddiskCafe is ERC721URIStorage{
using Counters for Counters.Counter;
Counters.Counter private _tokenIds;
mapping(string => uint8) hashes;
constructor() ERC721("HarddiskCafe", "HDC") {}
function awardItem(address recipient, string memory hash, string memory metadata) public returns (uint256){
require(hashes[hash] != 1);
hashes[hash] = 1;
_tokenIds.increment();
uint256 newItemId = _tokenIds.current();
_mint(recipient, newItemId);
_setTokenURI(newItemId, metadata);
return newItemId;
}
}