Fatal error: Uncaught Error: Class 'JsonSchema\Constraints\Constraint' not found in /home/vtsnised/public_html/anketa2.0/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/FormatConstraint.php:22 Stack trace: #0 {main} thrown in /home/vtsnised/public_html/anketa2.0/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/FormatConstraint.php on line 22