[05-Dec-2019 07:13:34 UTC] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /plugins/calendar/calendar.php on line 1861
[05-Dec-2019 07:13:34 UTC] PHP Fatal error: Uncaught Error: Call to a member function format() on null in /plugins/calendar/calendar.php:1915
Stack trace:
#0 /plugins/calendar/calendar.php(1245): calendar->_client_event(Array, true)
#1 /program/lib/Roundcube/rcube_plugin_api.php(494): calendar->event_action()
#2 /index.php(294): rcube_plugin_api->exec_action('calendar.event')
#3 {main}
thrown in /plugins/calendar/calendar.php on line 1915