Hi all,

(Likely since) After upgrading emacs from 27.1 to 28.2 and org mode from 
9.4.0 to 9.5.2 (i.e., from Debian stable to testing), 
org-icalendar-combine-agenda-files prints strange output when called 
(via cron) as follows:
emacsclient --eval "(org-icalendar-combine-agenda-files t)"

When I run this on the command line it prints (if I understand it 
correctly) Emacs byte code: #[514 "\302!\303!\304=\205B.
Running it non-asynchronously just prints nil.

Otherwise everything works but I would like to get rid of that output. 
Where/how could I start debugging this problem?

Best regards,
Robert