Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\hoteline\vendor\symfony\console\Tests\Completion\CompletionInputTest.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hoteline\vendor\symfony\console\Tests\Completion\CompletionInputTest.php on line 20