Fatal error: Uncaught Error: Class "JsonSchema\Constraints\Constraint" not found in /home/alotaishan/public_html/ots001/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/UndefinedConstraint.php:24 Stack trace: #0 {main} thrown in /home/alotaishan/public_html/ots001/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/UndefinedConstraint.php on line 24