Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\hoteline\vendor\symfony\css-selector\Tests\Parser\TokenStreamTest.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hoteline\vendor\symfony\css-selector\Tests\Parser\TokenStreamTest.php on line 19