Hi community, I have HA running on Raspberry pi4, since yesterday the user interface stop working. If i try to connect to homeassistant.Local:8123 or through Nabu casa or the app, I get an “impossibile to connect” Error.
But HA is working fine in the background, all devices and automations works. I don’t remember I did any modification.
How can I restore the user interface?
PS pi4 is not connected to a monitor and keyboard 
Thank you!
Not sure if ‘local’ represents an IP address but I always use IP internally
Last week I had a similar situation where somewhere between 01:00 and 03:00 ‘something’ happened. No logs were added as well which was odd even though I only have ‘warning’ level setup…log entries are normally added, known processes seemed running and also the other docker containers seemed to connect nicely to HA
I restarted HA and got the GUI back. Then also found out that the sensors also kept being updated as if nothing happened… .
Being a single and first time issue, I treated this as an anomaly but now I wonder
Can you call the HA UI by using the RPi4’s IP address, port 8123? Could be your mDNS resolver does no longer work …
Good point, thank you. I’m not at home now but I’ll definetely try that later.