Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\laragon\www\clientxcms\vendor\horstoeko\stringmanagement\tests\StringUtilsTest.php:8 Stack trace: #0 {main} thrown in C:\laragon\www\clientxcms\vendor\horstoeko\stringmanagement\tests\StringUtilsTest.php on line 8