Fatal error: Uncaught Error: Class "Spatie\Backtrace\Tests\TestCase" not found in C:\xampp\htdocs\astra-backoffice\vendor\spatie\backtrace\tests\ReduceArgumentsTest.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\spatie\backtrace\tests\ReduceArgumentsTest.php on line 19