Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/bigbrainscrm/app.quicksale.in/Modules/B2BPortal/Database/Migrations/2026_09_16_100300_create_b2b_cart_items_table.php:7 Stack trace: #0 {main} thrown in /home/bigbrainscrm/app.quicksale.in/Modules/B2BPortal/Database/Migrations/2026_09_16_100300_create_b2b_cart_items_table.php on line 7