Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\ducev\vendor\wamania\php-stemmer\test\FinnishTest.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ducev\vendor\wamania\php-stemmer\test\FinnishTest.php on line 7