Calendar Plugin 3.2.19 Uncaught Error

[rm13]

With calendar 3.2.19 and the libcalendaring 3.2.19 and sabre/vobject 3.3.3 installed I get:

PHP Fatal error:  Uncaught Error: Call to undefined method Sabre\VObject\Component::create() in /usr/share/roundcube/plugins/libcalendaring/libvcalendar.php:921


If I remove sabre/vobject 3.3.3 and I think it then falls back to using the included libcalendaring/lib/Sabre/Vobject 2.1.3 I don't see the fatal error. But it does not email participants about an event as expected. Only emails the first participant.

[hermawan-fsi]

i have got the same too, install with iredmail and ubuntu 16, rouncube 1.3.8 show this error

this erros  page isn't working  is currently unable to handle this request. HTTP ERROR 500

from maillog this

mail roundcube: PHP Fatal error:  Uncaught Error: Class 'kolab_attachments_handler' not found in /opt/www/roundcubemail-1.3.8/plugins/calendar/lib/calendar_ui.php:103#012Stack trace:#012#0 /opt/www/roundcubemail-1.3.8/plugins/calendar/calendar.php(313): calendar_ui->init_templates()#012#1 /opt/www/roundcubemail-1.3.8/program/lib/Roundcube/rcube_plugin_api.php(493): calendar->calendar_view()#012#2 /opt/www/roundcubemail-1.3.8/index.php(295): rcube_plugin_api->exec_action('calendar.index')#012#3 {main}#012  thrown in /opt/www/roundcubemail-1.3.8/plugins/calendar/lib/calendar_ui.php on line 103