Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\orus_\vendor\spipu\html2pdf\Tests\CrossVersionCompatibility\PhpUnit9\AbstractTestCase.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\orus_\vendor\spipu\html2pdf\Tests\CrossVersionCompatibility\PhpUnit9\AbstractTestCase.php on line 8