Symptoms
Attempting to load the calendar with reoccurring events returns a 500 error with the following backtrace.
[03-Dec-2024 03:41:19 Europe/Rome] PHP Fatal error:
Uncaught Sabre\VObject\Recur\NoInstancesException:
This recurrence rule does not generate any valid instances
Description
When a calendar contains reoccurring events with missing components in the event, it causes Roundcube to return a 500 error. Once the error appears, the calendar events stop loading. The issue is due to triggering a fatal exception in the Kolab module, which provides CalDAV services.
We've opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-46135. Follow this article to receive an email notification when a solution is published in the product.
Workaround
None available.
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