Occurred an error when execute SendbirdCall connectWebSocket()

Sendbird Voice/Video Calls
1

[SDK Version]
‘sendbird-calls:1.10.2’

[Frequency]
Everytime

Hello,

I’m a user of Angular and Typescript, and using Calls SDK for Javascript.

The problem is occurred after successfully authenticated with Call server.

When I execute SendbirdCall.connectWebSocket(), I receive this error.

What can i do to fix this error?

Thanks.

 TypeError: Cannot read properties of null (reading 'readyState')
    at SendBirdCall.min.js:6:376395
    at new ZoneAwarePromise (zone.js:1429:1)
    at e.value (SendBirdCall.min.js:6:376277)
    at e.value (SendBirdCall.min.js:6:379586)
    at e.value (SendBirdCall.min.js:20:4971)
    at Function.value (SendBirdCall.min.js:20:13876)
    at call.services.ts:34:13
    at Generator.next (<anonymous>)
    at asyncGeneratorStep (asyncToGenerator.js:3:1)
    at _next (asyncToGenerator.js:25:1)

Here are my codes,

  • CallService Class
    export class CallService {
  user: SendbirdCall.User | undefined;

  init() {
    if (!APP_ID) return;

    SendbirdCall.init(APP_ID);
  }

  async login(userId: string, accessToken: string) {
    // Authenticate with Call Server
    try {
      const user = await SendbirdCall.authenticate({
        userId: userId,
        accessToken: accessToken,
      });
      this.user = user;

      console.log(`User Authenticated with Call server: ${user.userId}`, user);
    } catch (err) {
      console.log('Failed to authenticate with Call server \n', err);
    }
    // Connect websocket to server
    try {
      await SendbirdCall.connectWebSocket();
      console.log('Succeed to connect to WebSocket');
    } catch (err) {
      console.log('Failed to connect to WebSocket \n', err);
    }
  }

  • AppComponent Class
    export class AppComponent implements OnInit {
  ...

  constructor(private callService: CallService) {}

  async ngOnInit() {
    this.callService.init();
    await this.callService.login(
      USER_ID,
      USER_ACCESS_TOKEN
    );
  }
  ...
2

I resolved this problem by using version 1.9.3

I think it is a issue of latest updated version…