Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\astra-backoffice\vendor\dompdf\php-svg-lib\tests\Svg\CssLengthTest.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\dompdf\php-svg-lib\tests\Svg\CssLengthTest.php on line 8