我正在構(gòu)建一個(gè)使用 React、Express、Sequalize 和 mySQL 的全棧網(wǎng)站。到目前為止，它具有注冊(cè)和登錄等功能，但是當(dāng)我嘗試添加錯(cuò)誤處理時(shí)，它失敗了。我收到以下錯(cuò)誤消息：Objects are not valid as a React child (found: object with keys {}). If you meant to render a collection of children, use an array instead.    in div (at Login.js:46)    in form (at Login.js:44)    in div (at Login.js:43)    in div (at Login.js:42)    in div (at Login.js:41)    in Login (created by Route)    in Route (at App.js:26)    in Switch (at App.js:23)    in div (at App.js:22)    in div (at App.js:15)    in Router (created by BrowserRouter)    in BrowserRouter (at App.js:14)    in App (at src/index.js:7)當(dāng)我添加此代碼{this.state.errenter code hereors}以顯示諸如“找不到用戶”之類的錯(cuò)誤消息時(shí)。import React, { Component } from "react";import { login } from "./UserFunctions";class Login extends Component {  constructor() {    super();    this.state = {      email: "",      password: "",      errors: {}    };    this.onChange = this.onChange.bind(this);    this.onSubmit = this.onSubmit.bind(this);  }  onChange(e) {    this.setState({ [e.target.name]: e.target.value });  }  onSubmit(e) {    e.preventDefault();    const user = {      email: this.state.email,      password: this.state.password    };    login(user, (res, err) => {      if (res) {        this.props.history.push(`/`);      } else {        this.setState({          errors: err        });      }    });  }  render() {    return (      <div className="container">        <div className="row">          <div className="col-md-6 mt-5 mx-auto">            <form noValidate onSubmit={this.onSubmit}>              <h1 className="h3 mb-3 font-weight-normal">Please sign in</h1>              <div className="alert alert-danger" role="alert">                {this.state.errors}              </div>              <div className="form-group">                <label htmlFor="email">Email address</label>                <input                  type="email"                  className="form-control"    );  }}export default Login;感謝有關(guān)如何解決此問(wèn)題的任何指導(dǎo)。