Sync error docker

Hello, I have a problem with connection between my win10 (remote comp.) and a docker (NAS) instance. On docker instance I got this log:

[ROKZG] 09:04:44 INFO: Relay listener (dynamic+https://relays.syncthing.net/endpoint) shutting down

[ROKZG] 09:04:44 INFO: c.S.listenerSupervisor: Failed service ‘dynamic+https://relays.syncthing.net/endpoint’ (1.000000 failures of 2.000000), restarting: true, error: “{dynamic+https://relays.syncthing.net/endpoint dynamic+https://relays.syncthing.net/endpoint} returned unexpectedly”, stacktrace: [unknown stack trace]

[ROKZG] 09:04:44 INFO: Relay listener (dynamic+https://relays.syncthing.net/endpoint) starting

[ROKZG] 09:04:54 INFO: Relay listener (dynamic+https://relays.syncthing.net/endpoint) shutting down

[ROKZG] 09:04:54 INFO: c.S.listenerSupervisor: Failed service ‘dynamic+https://relays.syncthing.net/endpoint’ (1.793677 failures of 2.000000), restarting: true, error: “{dynamic+https://relays.syncthing.net/endpoint dynamic+https://relays.syncthing.net/endpoint} returned unexpectedly”, stacktrace: [unknown stack trace]

[ROKZG] 09:04:54 INFO: Relay listener (dynamic+https://relays.syncthing.net/endpoint) starting

[ROKZG] 09:04:55 INFO: Detected 1 NAT service

[ROKZG] 09:05:04 INFO: Relay listener (dynamic+https://relays.syncthing.net/endpoint) shutting down

[ROKZG] 09:05:04 INFO: Entering the backoff state.

[ROKZG] 09:05:04 INFO: c.S.listenerSupervisor: Failed service ‘dynamic+https://relays.syncthing.net/endpoint’ (2.423587 failures of 2.000000), restarting: false, error: “{dynamic+https://relays.syncthing.net/endpoint dynamic+https://relays.syncthing.net/endpoint} returned unexpectedly”, stacktrace: [unknown stack trace]

I have forwarded the port 22000 to the nas server in my router, but no change.

It seems it can’t connect out to internet.

Probably the thing that came up recently with giving the docker full access to the network instead of somehow bridging it on a separate interface (no idea about the specifics).

In any case the relay listener should not fail and return without logging anything regarding why it happens.