Fatal error: Uncaught Error: Class 'JsonSchema\Constraints\Constraint' not found in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Libraries/justinrainbow/json-schema/src/JsonSchema/Constraints/StringConstraint.php:20 Stack trace: #0 {main} thrown in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Libraries/justinrainbow/json-schema/src/JsonSchema/Constraints/StringConstraint.php on line 20