Fatal error: Uncaught Error: Class 'Symfony\Component\Yaml\Exception\RuntimeException' not found in E:\xampp\htdocs\api.sis\vendor\symfony\yaml\Exception\DumpException.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\api.sis\vendor\symfony\yaml\Exception\DumpException.php on line 19