Not sure why I'm getting
```
Fehler beim Abfragen der Syncthing-Konfiguration: Error transferring http://127.0.0.1:8384/rest/system/config - server replied: Forbidden
URL der Anfrage: http://127.0.0.1:8384/rest/system/config
```
one one of my setups but this kind of error can likely be ignored shortly
after the start similar to other types of errors.
When stopping the Syncthing service ourselves we can apparently also
get "connection refused" and not just "remote host closed". So this
kind of error should be supressed as well.