Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\hou\vendor\overtrue\socialite\tests\Providers\WeWorkProviderTest.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hou\vendor\overtrue\socialite\tests\Providers\WeWorkProviderTest.php on line 16