Fatal error: Uncaught Error: Interface "JsonSchema\UriRetrieverInterface" not found in /users/quirl/www/filemanager/spark/protected/vendor/justinrainbow/json-schema/src/JsonSchema/Uri/UriRetriever.php:25 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/vendor/justinrainbow/json-schema/src/JsonSchema/Uri/UriRetriever.php on line 25