: import React, { Component } from 'react'; import web0 from './web0';  class App extends Component {   state = { lastWinner: 0, numberOfBets: 0, minimumBet: 0, totalBet: 0, maxAmountOfBets: 0 };    async componentDidMount() {     const lastWinner = await blackjack.methods.lastWinner().call();     const numberOfBets = await blackjack.methods.getNumberOfBets().call();      this.setState({ lastWinner, numberOfBets });   }  