Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/rwebserver/public_html/TDT_Ecommerce/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php:8 Stack trace: #0 {main} thrown in /home/rwebserver/public_html/TDT_Ecommerce/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php on line 8