恢復執行：ERC721PresetMinterPauserAutoId：必須具有鑄造者角色才能鑄造

Question

我正在嘗試使用Nestjs 、 Binance Tes.net 、 Metamask 、 truffle hdwallet-provider和openzeppelin創建一個端點來鑄造 NFT，如下所示。 智能合約創建過程沒有任何問題，但是當調用mint function 時出現以下錯誤：

execution reverted: ERC721PresetMinterPauserAutoId: must have minter role to mint

示例代碼：

智能合約.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;
  }
}

智能合約.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)
    {}
}

有誰知道這里的問題是什么？

Answer 1

當您部署合約時，鑄造者角色設置為部署者地址。 可能是您正在從其他沒有鑄造者角色的地址調用請求。

如果你想從其他地址鑄造 nft，你必須向該地址授予鑄造角色。