[kronolith] Howto debug "Permission denied" messages

[Markus Wagner]

Hi,

whenever I open a view on a calendar on kronolith I get an "Permission
denied".

Although, apparently everything works fine, I want to trace the source
of the "problem". (Unfortunately the message itself is not very
verbose). Also, it doesn't happen on other user accounts with less/no
calendar content.

I turned up logging to debug - but don't have a clue what to look for.
Or what should/might I check in the DB?

Thanks for any hints!

Markus