Fatal error: Uncaught Error: Class "Illuminate\Support\ServiceProvider" not found in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Testing 2\ParallelTestingServiceProvider.php:9
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Testing 2\ParallelTestingServiceProvider.php on line 9