StartOS Server One
After attempting a StartOS update several weeks ago, the server now boots into Diagnostic Mode.
The diagnostic page shows:
StartOS launch error:
Deserialization Error
Deserialization Error: missing field `overall`
Possible solutions:
Please contact support
Relevant log:
Opening data drive... complete
Loaded Disk
Loading database...
ERROR: Deserialization Error: missing field `overall`
Restart Server does not resolve the issue.
The issue appears to have started after a StartOS update attempt.
No Lightning channels or wallet funds are stored on this server. A reinstall would be acceptable if necessary.
One other thing I noticed in your screenshot: there are multiple recent posts mentioning upgrades to 0.4.x causing problems, including:
"Upgraded to 0.4 now my Start9 is bricked"
"Updated to 0.4 now sparrow won't connect..."
"Connection from Sparrow to Bitcoin Core NOT WORKING after update..."
That doesn't prove your issue is the same, but it does strengthen the theory that you're running into an update-related problem rather than a hardware failure.
I'd be interested to see what happens after you click that pink button. If it opens a composer window, you're in business.