The version of Kolab, individual versions of the software you are running, and the platform you are using.
RoundCube 1.4.1 (with the Elastic Skin )
Describe what happened.
I installed roundcubemail-plugins-kolab on my ISPconfig server that using Roundcube as web client.
i done this task using the provided instructions in its Readme and at this level everything was fine and i didn't got any error during the setup but just a warning during the execution of this instruction :
lessc --relative-urls -x plugins/libkolab/skins/elastic/libkolab.less > plugins/libkolab/skins/elastic/libkolab.min.css.
the warning was : (node) util.print is deprecated. Use console.log instead.
after that, when i enabled the calendar plugin as explained in the Readme by :
"5. Enable the calendar plugin
$ edit config/config.inc.php
Add 'calendar' to the list of active plugins:
$config['plugins'] = array( (...) 'calendar', );
I was not able to view the content of any email when i tried to open it as you can see in the "A" area in the screenshot attached to this description
Describe how the actual result does not meet your expectations.
i hope to be able to open any emails in the both case, i mean if the calendar plugin is enabled or not.
in my log i found this error :
PHP Fatal error: Class 'Sabre\VObject\Property\Text' not found in /var/lib/roundcube/plugins/libcalendaring/libvcalendar.php on line 1451