Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/bimmertest/BookStack/database/migrations/2016_01_11_210908_add_external_auth_to_users.php:6 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/database/migrations/2016_01_11_210908_add_external_auth_to_users.php on line 6