Fatal error: Uncaught Error: Class 'JsonSchema\Constraints\Constraint' not found in /home/nascflem/public_html/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/CollectionConstraint.php:20 Stack trace: #0 {main} thrown in /home/nascflem/public_html/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/CollectionConstraint.php on line 20