MetaMask - RPC 错误：执行恢复 {code: -32000, message: 'execution reverted'} 在尝试连接到智能合约时

Question

I have deployed a smart contract on a public testnet and now I am trying to connect to it from the front end using ethers js. But when I try to fetch the value it gives the following errors in the console:

I am using Angular for the front end and here's the code I wrote:

declare let window: any;
import { Component, OnInit } from '@angular/core';
import { ethers } from 'ethers';
import addresses from '../../environment/contract-address.json'
import Election from '../../blockchain/artifacts/blockchain/contracts/Election.sol/Election.json'

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  title = 'angvote';
  public signer: any;
  public electionContract: any;
  public candidate : any;
  public candidatesList:string[] | undefined;
  constructor(){}

  async ngOnInit(){
    const provider = new ethers.providers.Web3Provider(window.ethereum);
    window.ethereum.enable()
    
    provider.on("network",(newNetwork: any, oldNetwork: any)=>{
      if (oldNetwork){
        window.location.reload();
      }
    });

    this.signer = provider.getSigner();

    if(await this.signer.getChainId() !== 4){
      alert("Please change your network to Rinkeby!")
    }

    this.electionContract = new ethers.Contract(addresses.electioncontract,Election.abi,this.signer);
    this.candidate = await this.electionContract.candidatesCount();
  }  
}

Answer 1

I have encountered the same error. I had not changed the contract address once I deployed it to the testnet(Previously I deployed to localhost). Just check if the contract address you are using is of the contract you deployed to the testnet.

Answer 2

I met the same problem, check that:

1. the contract address is correct
2. the method you call is correct
3. the parameter is correct

in my case, I called an non-exist method.

Answer 3

I came across this problem and tried this solution and more but it didn't work. What solve it for me was making sure my contract address and abi file had the same version.