Fatal error: Uncaught Error: Class 'JsonSchema\Constraints\BaseConstraint' not found in /var/www/html/simplesamlphp/vendor/justinrainbow/json-schema/src/JsonSchema/Validator.php:26
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/vendor/justinrainbow/json-schema/src/JsonSchema/Validator.php on line 26