Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\Landaweb\webs\landaweb\backend\vendor\spipu\html2pdf\Tests\CrossVersionCompatibility\PhpUnit9\CssConverterTestCase.php:8 Stack trace: #0 {main} thrown in C:\Landaweb\webs\landaweb\backend\vendor\spipu\html2pdf\Tests\CrossVersionCompatibility\PhpUnit9\CssConverterTestCase.php on line 8