当我尝试使用socket.io连接到服务器时，为什么在响应本机应用程序中出现错误？

Question

我想尝试将我的应用程序连接到我们的后端以进行实时更新，但是我遇到这样的服务器错误。如果我添加本地服务器url或实时运行，它仍然是相同的错误。如何使用用于聊天消息传递应用程序的socket.io将我的应用程序连接到服务器。

componentDidMount(){
var YOURURL = "https://node.whizbite.com";

  const socket = io(YOURURL);

  console.log('socket',socket);

  socket.on('connect', () => {
    console.log("socket connected")
    socket.emit('YOUR EVENT TO SERVER', {})
    socket.on('EVENT YOU WANNA LISTEN', (r) => {
    })
  })

  socket.on('connect_error', (err) => {
    console.log("connection error",err)
  })

  socket.on('disconnect', () => {
    console.log("Disconnected Socket!")
  })
}

它给了我这种错误.....

Error: server error
    at Socket.onPacket (socket.js:455)
    at XHR.<anonymous> (socket.js:278)
    at XHR.Emitter.emit (index.js:133)
    at XHR.Transport.onPacket (transport.js:149)
    at callback (polling.js:144)
    at Object.exports.decodePayload (browser.js:384)
    at XHR.Polling.onData (polling.js:148)
    at Request.<anonymous> (polling-xhr.js:128)
    at Request.Emitter.emit (index.js:133)
    at Request.onData (polling-xhr.js:302)