Fatal error: Uncaught Error: Class "PHPUnit\TextUI\XmlConfiguration\SchemaDetectionResult" not found in C:\xampp\htdocs\Yeni klasör\yumu_bc\vendor\phpunit\phpunit\src\TextUI\Configuration\Xml\SchemaDetector\SuccessfulSchemaDetectionResult.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\Yeni klasör\yumu_bc\vendor\phpunit\phpunit\src\TextUI\Configuration\Xml\SchemaDetector\SuccessfulSchemaDetectionResult.php on line 19