Fatal error: Uncaught Error: Class 'Tinebase_Scheduler_Task' not found in /home/compute1/public_html/tine.computerfee-server.de/HumanResources/Scheduler/Task.php:18 Stack trace: #0 {main} thrown in /home/compute1/public_html/tine.computerfee-server.de/HumanResources/Scheduler/Task.php on line 18