Error when getBalance: failed to meet quorum (method="getBlockNumber"

Everything works great until suddenly, starts to broken, I was thinking maybe I did not provider the api key for the providers, but after providing, still the same, what am I missing here?

I am just getting the balance here, nothing fancy.

const provider = ethers.getDefaultProvider(activeEthNetwork, {
      infura: {
        projectId: 'aaa',
        projectSecret: 'aaa',
      },
      etherscan: 'aaa',
      alchemy:
        'https://eth-kovan.alchemyapi.io/v2/aaa',
    });


export class ERC20Service {
  tokenSymbol: ITokenSymbol;
  provider: ethers.providers.BaseProvider;
  contract: ERC20SmartContracts;
  decimals: number;

  constructor(
    tokenSymbol: IERC20TokenSymbol,
    networkName: IEthNetwork,
    provider: ethers.providers.BaseProvider,
  ) {
    const tokenInfo = ERC20Tokens[tokenSymbol];
    const networkInfo = tokenInfo.networks[networkName];

    this.tokenSymbol = tokenSymbol;
    this.provider = provider;

    this.contract = ERC20SmartContracts__factory.connect(
      networkInfo.tokenContractAddress,
      this.provider,
    );

    this.decimals = networkInfo.decimals;
  }

  balanceOf = async (ownerAddress: string) => {
    const balance = await this.contract.balanceOf(ownerAddress);

    const balanceParsed = ethers.utils.formatUnits(balance);

    return balanceParsed;
  };
}

I am using "ethers": "^5.4.7", on React native 😃 Great lib, thanks 😃

[ricmoo]

Yes, you can show them the mnemonic for backup purposes, but internally you can store the wallet.privateKey And use that on future instantiations, which is fast.

[ricmoo]

Provider and Contract creation is basically free. If a Wallet is created from a mnemonic or JSON wallet, there can be heavy computation done on limited hardware; RN usually has a debugger hook, which affects the tick in the event loop, so that can cause things to become slow. If you are using a private key though, it’s fast since the only computation is an elliptic point exponent and keccak256 to derive the address.