Fatal error: Uncaught Error: Class 'GrahamCampbell\ResultType\Result' not found in D:\xampp\htdocs\psp\backend\vendor\graham-campbell\result-type\src\Success.php:24 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\graham-campbell\result-type\src\Success.php on line 24