New installation self hosted on UBUNTU server 18.04 and forward 443 (TCO and UDO) and 10.000:20.000 (UDP), but error

Hi, I am trying a new installation, with xxx.duckdns.org dynamic IP fix,

The installation ends fine, no errors in terminal, I can log to the server typing https://xxxx.duckdns.org and lands correctly on the Jitsi homepage. Camera and MIC working, but when somebody external joines the meeting, the meeting crashes.

How to debug?

Are you behind a NAT? Do you have the ports forwarded (please see guide) correctly in your router for this? Please check the quickinstall guide on how to configure behind a NAT

Are you doing this within the network?

Please post you jicofo logs. it can be found in /var/log/jitsi , mask any personal info