pykolab-0.8.5-1.1.el7.kolab_16.noarch

Stack trace:
#0 /usr/share/roundcubemail/plugins/calendar/drivers/kolab/kolab_calendar.php(260): DateTime->__construct('@0')
#1 /usr/share/roundcubemail/plugins/calendar/drivers/kolab/kolab_driver.php(1449): kolab_calendar->list_events('1477281600', '1477886400', NULL, 1, Array)
#2 /usr/share/roundcubemail/plugins/calendar/calendar.php(1242): kolab_driver->load_events('1477281600', '1477886400', NULL, 'T3RoZXIgVXNlcnM...')
#3 [internal function]: calendar->load_events()
#4 /usr/share/roundcubemail/program/lib/Roundcube/rcube_plugin_api.php(491): call_user_func(Array)
#5 /usr/share/roundcubemail/index.php(283): rcube_plugin_api->exec_action('calendar.load_e...')
#6 /usr/share/roundcubemail/public_html/index.php(26): include('/usr/share/roun...')
#7 {main}

thrown in /usr/share/roundcubemail/plugins/calendar/drivers/kolab/kolab_calendar.php on line 260

I have 1 gb of space available and use the web interface for roundcubemail

This is a private instance running internally

Best Regards
Ed