Failure after Server Restart

Hey everyone,

I have a little Problem. I’ve configured a Proxmox Home Server and installed Rocketchat on a VM. Everything was fine an worked. So I’ve setup an Proxy where I configured that my Domain points on the Rocketchat path. And still everything is working.

Today I’ve restared my Server, now I can connect every other Vm, but when i try to connect to the Rocketchat VM I only become following failure:

" The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later."

Edit: I’ve read the logs an found this:

Oct  6 16:17:20 RocketChat rocketchat-server.rocketchat-server[1679]: Mongo is not available, can't start. Waiting 10 seconds and trying again
Oct  6 16:17:30 RocketChat rocketchat-server.rocketchat-server[1679]: Mongo is not available, can't start. Waiting 15 seconds and trying again
Oct  6 16:17:45 RocketChat rocketchat-server.rocketchat-server[1679]: Mongo is not available, can't start. Waiting 20 seconds and trying again
Oct  6 16:18:05 RocketChat rocketchat-server.rocketchat-server[1679]: Mongo is not available, can't start. Waiting 25 seconds and trying again
Oct  6 16:18:30 RocketChat rocketchat-server.rocketchat-server[1679]: Mongo is not available, can't start. Waiting 30 seconds and trying again
Oct  6 16:19:00 RocketChat rocketchat-server.rocketchat-server[1679]: Was unable to connect to Mongo.  Please make sure Mongo has started successfully: sudo systemctl status snap.rocketchat-server.rocketchat-mongo to view logs: sudo journalctl -u snap.rocketchat-server.rocketchat-mongo
Oct  6 16:19:00 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-server.service: Main process exited, code=exited, status=1/FAILURE
Oct  6 16:19:00 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-server.service: Failed with result 'exit-code'.
Oct  6 16:19:00 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-server.service: Service hold-off time over, scheduling restart.
Oct  6 16:19:00 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-server.service: Scheduled restart job, restart counter is at 3.
Oct  6 16:19:00 RocketChat systemd[1]: Stopped Service for snap application rocketchat-server.rocketchat-server.
Oct  6 16:19:00 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-server.service: Failed to reset devices.list: Operation not permitted
Oct  6 16:19:00 RocketChat systemd[1]: Started Service for snap application rocketchat-server.rocketchat-server.
Oct  6 16:19:00 RocketChat rocketchat-server.rocketchat-server[2087]: Mongo is not available, can't start. Waiting 10 seconds and trying again
Oct  6 16:19:10 RocketChat rocketchat-server.rocketchat-server[2087]: Mongo is not available, can't start. Waiting 15 seconds and trying again

When I run this Command:
sudo systemctl status snap.rocketchat-server.rocketchat-mongo

This appears:

root@RocketChat:/var/log# sudo systemctl status snap.rocketchat-server.rocketchat-mongo
* snap.rocketchat-server.rocketchat-mongo.service - Service for snap application rocketchat-server.rocketchat-mongo
   Loaded: loaded (/etc/systemd/system/snap.rocketchat-server.rocketchat-mongo.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2020-10-06 16:14:04 UTC; 8min ago
  Process: 792 ExecStart=/usr/bin/snap run rocketchat-server.rocketchat-mongo (code=exited, status=48)
 Main PID: 792 (code=exited, status=48)

Oct 06 16:14:04 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-mongo.service: Main process exited, code=exited, status=48/n/a
Oct 06 16:14:04 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-mongo.service: Failed with result 'exit-code'.
Oct 06 16:14:04 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-mongo.service: Service hold-off time over, scheduling restart.
Oct 06 16:14:04 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-mongo.service: Scheduled restart job, restart counter is at 5.
Oct 06 16:14:04 RocketChat systemd[1]: Stopped Service for snap application rocketchat-server.rocketchat-mongo.
Oct 06 16:14:04 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-mongo.service: Start request repeated too quickly.
Oct 06 16:14:04 RocketChat systemd[1]: snap.rocketchat-server.rocketchat-mongo.service: Failed with result 'exit-code'.
Oct 06 16:14:04 RocketChat systemd[1]: Failed to start Service for snap application rocketchat-server.rocketchat-mongo.

Did someone now this Problem?

Greetings from Germany,
Lennard