Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\kalimark\vendor\phenx\php-svg-lib\tests\Svg\StyleTest.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\kalimark\vendor\phenx\php-svg-lib\tests\Svg\StyleTest.php on line 15