SismondiNFT_1.sol

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/Counters.sol";


import {Base64} from "./libraries/Base64.sol";

contract SismondiNFT is ERC721URIStorage {

    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;

    uint256 public totalSupply;

    string images_prefix =