Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in C:\dolibarr\www\lev-up\vendor\backpack\crud\src\BackpackServiceProvider.php:12 Stack trace: #0 {main} thrown in C:\dolibarr\www\lev-up\vendor\backpack\crud\src\BackpackServiceProvider.php on line 12