React-native & Colyseus.js : Issue with room.join

Hello guys,

I'm running an issue with RN 0.59.5 after doing a room.join, when I dismiss the error, the server got my player join, but room.OnJoin is never called :


Here's my code:

export default class GameScreen extends Component {
  room: any;
  client: any;

  componentDidMount() {
    this.client = new Colyseus.Client("ws://", {});

  onConnection() {
    this.client.onOpen.add(() => {
      console.log("client connected");
      try { = this.client.join("solo"); => {
          console.log("client joined successfully");
      } catch (err) {
        console.log("test", err);

In App.ts:

import React, {Component} from "react";
import HomeNavigation from "./src/navigation/home";
import AsyncStorage from "@react-native-community/async-storage";
import {Buffer} from "buffer";
global.Buffer = Buffer;
window = Object.assign(window, {localStorage: AsyncStorage});

interface Props {}

export default class App extends Component<Props> {
  render() {
    return <HomeNavigation />;

Many thanks!

Hey @Meabo, please try removing your node_modules + package-json.lock, and re-installing the modules. I'm afraid this is happening because of an update we've made on latest @colyseus/schema version. Let me know if it works for you! Cheers

Hello @endel thanks for your answer,
So I deleted node_modules and package-lock.json, reinstalled colyseus.js at its latest version but the error's still there.

But I got something interesting:
It works with @colyseus/schema 0.4.23 instead of 0.4.29. so I downgraded Schema until I find a solution :)