Fatal error: Uncaught Error: Class 'JsonSchema\Exception\RuntimeException' not found in C:\Apache24\htdocs\vendor\justinrainbow\json-schema\src\JsonSchema\Exception\ValidationException.php:12 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\justinrainbow\json-schema\src\JsonSchema\Exception\ValidationException.php on line 12