Fatal error: Uncaught Error: Class "JsonSchema\Constraints\Constraint" not found in /var/www/html/orian-wiki/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/UndefinedConstraint.php:23 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/UndefinedConstraint.php on line 23