Fatal error: Uncaught Error: Interface 'Ai1ec_Cache_Interface' not found in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/lib/cache/memory.php on line 14

Error: Interface 'Ai1ec_Cache_Interface' not found in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/lib/cache/memory.php on line 14

Call Stack:
    0.0001     360040   1. {main}() /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/lib/cache/memory.php:0