Fatal error: Uncaught Error: Class "Illuminate\Support\ServiceProvider" not found in /home/bigbrainscrm/app.quicksale.in/Modules/B2BPortal/Providers/B2BPortalServiceProvider.php:8 Stack trace: #0 {main} thrown in /home/bigbrainscrm/app.quicksale.in/Modules/B2BPortal/Providers/B2BPortalServiceProvider.php on line 8