VLC Cant open stream

[ad1k4h]

Dear Author,

I attempt to stream from OBS like:

rtmp://serverIP/live
streamkey: test

and attempted to open in vlc:
rtmp://serverIP/live/test
rtmp://serverIP/live/test/flvplayback
rtmp://serverIP/live/flvplayback/test
rtmp://serverIP/flvplayback/live/test
rtmp://serverIP/flvplayback/test

but not opening.
The OBS is connected and streaming, server receives traffic.
Can you make please a tutorial, how to make it work?

Installed on Debian 10 with apt-get install crtmpserver

Thank you!