The project was always good before, but there was an error today. When the second user entered the room, he made an error and could not communicate, how to solve it?
The error points you to your problem: videobridge not available. Have you checked whether the bridge is running? Have you checked bridge logs? Sometimes bridge reports unhealthy to jicofo and jicofo stops using that bridge, if this is the case you need to fnid the time when that happen from jicofo logs and see what happen in the bridge during the same period, why it had failed.