Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\API\vendor\cloudinary\transformation-builder-sdk\tests\Unit\Transformation\Image\VariableTest.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\API\vendor\cloudinary\transformation-builder-sdk\tests\Unit\Transformation\Image\VariableTest.php on line 21