Fatal error: Uncaught Error: Class "GrahamCampbell\ResultType\Result" not found in D:\programs\xampp\htdocs\backend-test\vendor\graham-campbell\result-type\src\Error.php:25 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\graham-campbell\result-type\src\Error.php on line 25