Can't start hassio_observer in logs

I installed HA OS as a proxmox vm and am having some issues. I see this repeating in the supervisor logs:

21-05-14 19:31:48 INFO (MainThread) [supervisor.plugins.observer] Starting observer plugin
21-05-14 19:31:55 WARNING (SyncWorker_4) [supervisor.docker] Can't attach hassio_observer to hassio-network!
21-05-14 19:32:26 ERROR (SyncWorker_4) [supervisor.docker] Can't start hassio_observer: 500 Server Error for http+docker://localhost/v1.40/containers/a49ce7911cd0f93bf4138e0e8914e9ac9a53ef56745a1336ec3a2de70f5313a8/start: Internal Server Error ("driver failed programming external connectivity on endpoint hassio_observer (f44e9ccacdd4d51b850f4de3ffecd2f0b662f2121cdf848c2bf50bc2e73dce81): Bind for 0.0.0.0:4357 failed: port is already allocated")
21-05-14 19:32:27 ERROR (MainThread) [supervisor.plugins.observer] Can't start observer plugin
21-05-14 19:32:27 ERROR (MainThread) [supervisor.misc.tasks] Observer watchdog reanimation failed!
21-05-14 19:33:27 WARNING (MainThread) [supervisor.misc.tasks] Watchdog/Docker found a problem with observer plugin!
21-05-14 19:33:27 INFO (MainThread) [supervisor.plugins.observer] Starting observer plugin
21-05-14 19:33:27 INFO (SyncWorker_4) [supervisor.docker.interface] Cleaning hassio_observer application
21-05-14 19:33:42 WARNING (SyncWorker_4) [supervisor.docker] Can't attach hassio_observer to hassio-network!
21-05-14 19:34:18 ERROR (SyncWorker_4) [supervisor.docker] Can't start hassio_observer: 500 Server Error for http+docker://localhost/v1.40/containers/93d143d0f42ad1b879640354f6aec8c719fca2e06770ac7f51d0fc7f9d2bfb32/start: Internal Server Error ("driver failed programming external connectivity on endpoint hassio_observer (68914098df654e6a5d7fdd67f74a56f296d4952e96548d4abdb55bce90bdb588): Bind for 0.0.0.0:4357 failed: port is already allocated")
21-05-14 19:34:18 ERROR (MainThread) [supervisor.plugins.observer] Can't start observer plugin
21-05-14 19:34:18 ERROR (MainThread) [supervisor.misc.tasks] Observer watchdog reanimation failed!
21-05-14 19:35:20 WARNING (MainThread) [supervisor.misc.tasks] Watchdog/Docker found a problem with observer plugin!
21-05-14 19:35:20 INFO (MainThread) [supervisor.plugins.observer] Starting observer plugin
21-05-14 19:35:20 INFO (SyncWorker_2) [supervisor.docker.interface] Cleaning hassio_observer application

I’ve done some searching and I found some suggestions to run:

ha supervisor repair

and if that doesn’t work:

ha supervisor rebuild

So I tried to connect to the console but after loggin in it just spews the help message over and over. The error seems to be:

rlwrap: error: My terminal reports width=0 (it it emacs?)  I can't handle this, sorry!

This didn’t happen when I first installed it a week or two ago. Any suggestions?

Is this solved? I have a very similar issue with some addons including nginx proxy after the last upgrade

Thanks
L: