Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\database\migrations\2023_08_13_234828_add_forum_foreign_key_constraints.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\database\migrations\2023_08_13_234828_add_forum_foreign_key_constraints.php on line 21