BRCloudDocsErrorDomain Code=12 “App library not found

Gerriet M. Denkmann

Starting an document based app in macOS 13.1 I get:

[…] [default] [ERROR] Failed getting container for URL: [ ~/Desktop/the current document]
r, error: Error Domain=BRCloudDocsErrorDomain Code=12 “App library not found: ‘’” UserInfo={NSDescription=App library not found: ‘’}

What does this mean?
I am not using Cloud storage and the document does not live on the desktop.

Apart from this annoying log message, all seems to be working fine.