Server not reachable

Please describe the issue in as detailed a way as possible
Hello,
i had to migrate my server to a new one. I installed assetto new und copied the Server Manager to the new server.
I can start the Server and it also starts assetto. Log looks fine an the server tells he is listening on 0.0.0.0:8772. But the Server ist no reachable.

When i try to wget from the Server i become an valid answer. But from the “internet” i get an timeout.

time="2024-07-10T12:08:43+02:00" level=info msg="This copy of Assetto Corsa Server Manager is licensed to: xxx-xx-xxx-xxx-xxx"
time="2024-07-10T12:08:43+02:00" level=info msg="License created at: Wed Nov 22 19:39:20 2023"
time="2024-07-10T12:08:43+02:00" level=info msg="License expires: never"
time="2024-07-10T12:08:44+02:00" level=info msg="Initialising Raven monitoring"
time="2024-07-10T12:08:44+02:00" level=info msg="Initialising Prometheus Monitoring"
time="2024-07-10T12:08:44+02:00" level=info msg="Janitor: Registered Task: Store Cleanup (Soft Deleted Content), next run at: 2024-07-15 03:00:00 +0200 CEST"
time="2024-07-10T12:08:44+02:00" level=info msg="Janitor: Registered Task: Login Sessions Clean Up, next run at: 2024-07-11 04:00:00 +0200 CEST"
time="2024-07-10T12:08:45+02:00" level=info msg="Discord notification bot connected"
time="2024-07-10T12:08:45+02:00" level=info msg="Janitor: Registered Task: Rebuild Search Indices, next run at: 0001-01-01 00:00:00 +0000 UTC"
time="2024-07-10T12:08:45+02:00" level=info msg="Janitor: Registered Task: Rebuild Track Maps, next run at: 0001-01-01 00:00:00 +0000 UTC"
time="2024-07-10T12:08:45+02:00" level=info msg="Server manager instance identifies as: 9e96e98b-bda8-4323-bb4d-43b4ba13c50f"
time="2024-07-10T12:08:45+02:00" level=info msg="Track: rs_autodrom_slomczyn_rotax (karting) has no drs file. DRS anywhere will be enabled."
time="2024-07-10T12:08:45+02:00" level=info msg="Starting Server Process with event: 3 sessions with 8 entrants at rs_autodrom_slomczyn_rotax (karting)"
time="2024-07-10T12:08:45+02:00" level=error msg="Couldn't read track (rs_autodrom_slomczyn_rotax) splines, pit lane detection disabled" error="open /home/acserver/assetto/content/tracks/rs_autodrom_slomczyn_rotax/karting/ai/pit_lane.ai: no such file or directory"
time="2024-07-10T12:08:45+02:00" level=info msg="Starting Assetto Corsa Server Manager on: 0.0.0.0:8772"

Which version of Server Manager are you using?
2.4.0 and 2.4.1

What OS are you running Server Manager on?
Debian 12

Any extra information about the problem