Room of 2 people crashes in dockerized Jitsi on Ubuntu Server

Hi,
I installed dockerized Jitsi env in my local network following https://jitsi.github.io/handbook/docs/devops-guide/devops-guide-docker.
I installed the containers on my Ubuntu Server 20.04 and tried to have a conference between two people accessing the room using IP address.

When the second member connects, both members start having issue: “Something went wrong” and then rejoining, but that issue is reproduced every time you rejoin.

Browser: Firefox 77.0.1 (64-bit) for Ubuntu

I cannot currently upload browser console log, as I am a new user here, but can provide on request.

Thanks