Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\laragon\www\SIMRS\vendor\mike42\gfx-php\test\integration\PngsuiteTest.php:13 Stack trace: #0 {main} thrown in C:\laragon\www\SIMRS\vendor\mike42\gfx-php\test\integration\PngsuiteTest.php on line 13