videobridgeNotAvailable issue in ubuntu 20.04 (64bit)

Hello,
I’ve followed this tutorial (Docs/Jitsi Meet Installation.md at master · mjtiempo/Docs · GitHub) to install jitsi with jitsi tokens to have authentication via jwt, but when I’m connecting with second user the conference fails for both users displaying these issues:

  1. [JitsiMeetJS.js] <Object.getGlobalOnErrorHandler>: UnhandledError: Focus error, retry after 1000 Script: null Line: null Column: null StackTrace: Error: Focus error, retry after 1000 [this happens even for single user]
  2. Logger.js:154 2021-02-19T12:26:38.312Z [conference.js] <Z._onConferenceFailed>: CONFERENCE FAILED: conference.videobridgeNotAvailable

I’ve checked credentials and all are defaulted from installation, what could be missing?

jicofo logs show:
WARNING: [94] org.jitsi.jicofo.bridge.BridgeSelectionStrategy.log() Failed to select initial bridge for participantRegion=null
Jicofo 2021-02-19 13:27:07.705 SEVERE: [94] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Can not invite participant – no bridge available.
Jicofo 2021-02-19 13:27:07.705 SEVERE: [94] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Failed to select a bridge for Participant[cv@conference.cv-meetings.clinicavirtual.pt/9990c659]@232058345

jvb logs don’t show any errors.

prosody logs show:
error Error binding encrypted port for https: No certificate present in SSL/TLS configuration for https port 5281

Can someone help?