恢复执行：ERC721PresetMinterPauserAutoId：必须具有铸造者角色才能铸造

Question

我正在尝试使用Nestjs 、 Binance Tes.net 、 Metamask 、 truffle hdwallet-provider和openzeppelin创建一个端点来铸造 NFT，如下所示。 智能合约创建过程没有任何问题，但是当调用mint function 时出现以下错误：

execution reverted: ERC721PresetMinterPauserAutoId: must have minter role to mint

示例代码：

智能合约.service.ts

import { Injectable, Logger } from '@nestjs/common';
import Web3 from 'web3';
import HDWalletProvider from '@truffle/hdwallet-provider';
import * as fs from 'fs';
import * as path from 'path';

@Injectable()
export class SmartContractService {
  mnemonic = 'mnemonic goes here'
  client: any;
  nftAbi;
  nftBytecode;

  logger = new Logger('SmartContractService');

  constructor() {
    const provider = new HDWalletProvider(
      this.mnemonic,
      'https://data-seed-prebsc-1-s1.binance.org:8545',
    );
    this.client = new (Web3 as any)(
      provider,
    );
    this.initNFTConfigs();
  }

  getClient() {
    return this.client;
  }

  async createContract() {
    const accounts = await this.client.eth.getAccounts();
    const { _address } = await new this.client.eth.Contract(this.nftAbi)
      .deploy({
        data: this.nftBytecode,
        arguments: [
          'Sehas Nft',
          'nft',
          'https://my-json-server.typicode.com/AjanthaB/json-data/nft-images/',
        ],
      })
      .send({ from: accounts[0] });

    return _address;
  }

  async mintNFT(address: string) {
    const accounts = await this.client.eth.getAccounts();
    const nft = await new this.client.eth.Contract(this.nftAbi, address);
    await nft.methods.mint(accounts[0]).call();
  }

  private initNFTConfigs() {
    const filePath = path.resolve(__dirname, '../smart-contracts/HmtNFT.json');
    this.logger.log(filePath);
    const source = fs.readFileSync(filePath, 'utf-8');
    const { abi, bytecode } = JSON.parse(source);
    this.nftAbi = abi;
    this.nftBytecode = bytecode;
  }
}

智能合约.controller.ts

import { Controller, Get } from '@nestjs/common';
import { SmartContractService } from './smart-contract.service';

@Controller('api/v1')
export class SmartContractController {

  constructor(private smartContractService: SmartContractService) {}

  @Get('/nft-contracts')
  async createSmartContract() {
    const address = await this.smartContractService.createContract();
    console.log('address: ' + address);
    if (address) {
      return await this.smartContractService.mintNFT(address);
    }
    return null;
  }
}

合同文件：

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/presets/ERC721PresetMinterPauserAutoId.sol";

contract HmtNFT is ERC721PresetMinterPauserAutoId {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;

    constructor(string memory name, string memory symbol, string memory baseTokenURI)
        ERC721PresetMinterPauserAutoId(name, symbol, baseTokenURI)
    {}
}

有谁知道这里的问题是什么？

Answer 1

当您部署合约时，铸造者角色设置为部署者地址。 可能是您正在从其他没有铸造者角色的地址调用请求。

如果你想从其他地址铸造 nft，你必须向该地址授予铸造角色。