Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/learfhbc/contextexpertscyber.site/public_html/database/migrations/2021_04_27_102729_make_discussion_course_nullable.php:7 Stack trace: #0 {main} thrown in /home/learfhbc/contextexpertscyber.site/public_html/database/migrations/2021_04_27_102729_make_discussion_course_nullable.php on line 7