Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php:20 Stack trace: #0 {main} thrown in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php on line 20