Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /www/wwwroot/base.code.treexhd.me/VSCode/laravel/covid/tests/Unit/ExampleTest.php:7 Stack trace: #0 {main} thrown in /www/wwwroot/base.code.treexhd.me/VSCode/laravel/covid/tests/Unit/ExampleTest.php on line 7