Bitcoin App Proxy stuck always `Starting...`

Strange one.

Bitcoind container is up and running, so is bitcoin_app_proxy on port 2100.


Blockchain is fully synced, mempool explorer works.

However cannot get a response from the Bitcoin app proxy on umbrel.local:2100 , which results in dashboard constantly showing the App as Starting...


Log for the app proxy shows:
Error wating for port: "connect EHOSTUNREACH" Retrying...

Any ideas?

I have the same situation. I hope somebody answer.