Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in C:\xampp\htdocs\finance\vendor\kalnoy\nestedset\src\NestedSetServiceProvider.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\finance\vendor\kalnoy\nestedset\src\NestedSetServiceProvider.php on line 8