Fatal error: Uncaught Error: Class 'Illuminate\Database\Migrations\Migration' not found in /home/appilogicx/public_html/marketing/database/migrations/2018_09_02_165941_update_nullable.php:7 Stack trace: #0 {main} thrown in /home/appilogicx/public_html/marketing/database/migrations/2018_09_02_165941_update_nullable.php on line 7