Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\xampp\htdocs\api_kpl\vendor\spipu\html2pdf\Tests\CrossVersionCompatibility\PhpUnit5\CssConverterTestCase.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\api_kpl\vendor\spipu\html2pdf\Tests\CrossVersionCompatibility\PhpUnit5\CssConverterTestCase.php on line 8