Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\print-bk\vendor\phpunit\php-code-coverage\tests\TestCase.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print-bk\vendor\phpunit\php-code-coverage\tests\TestCase.php on line 20