Fatal error: Uncaught Error: Interface 'JsonSchema\Uri\Retrievers\UriRetrieverInterface' not found in C:\Apache24\htdocs\vendor\justinrainbow\json-schema\src\JsonSchema\Uri\Retrievers\AbstractRetriever.php:16 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\justinrainbow\json-schema\src\JsonSchema\Uri\Retrievers\AbstractRetriever.php on line 16