We are all volunteers in this group, there is commercial support if your need is urgent
https://bigbluebutton.org/commercial-support/
Are you on the latest. 2.6.5 bbb, and greenlight
3.0.3.1 the picture looks like older greenlight,
I would revert back till its working, then use bbb-install to get to the latest..
Fully test the basic greenlight to make sure it works.
Then try applying one change at time. And incrementally see where the issue is.
You can look at the logs in docker with >docker logs greenlight-v3
Looks like the locales are not loading, if you modified a local copy most likely the changes in docker-compose.yml are incorrect.
The https to http mix content may be something with nginx/haproxy config. make sure the .env has the https:// for the server and not http
posting the docker-compose.yml, and the listing of ls -alt /root/greenlight-v3 to forums with the output of docker logs can help "others" assist you as time allows.
Regards,
Stephen