Fatal error: Uncaught Error: Class 'Illuminate\Database\Migrations\Migration' not found in /home/app/htdocs/lidia/database/migrations/2015_10_27_180214_add_is_system_to_activities.php:6 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/database/migrations/2015_10_27_180214_add_is_system_to_activities.php on line 6