Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in /var/www/html/vendor/laravel/framework/src/Illuminate/Testing/ParallelTestingServiceProvider.php:9 Stack trace: #0 {main} thrown in /var/www/html/vendor/laravel/framework/src/Illuminate/Testing/ParallelTestingServiceProvider.php on line 9