Fatal error: Uncaught Error: Class "JMS\Serializer\AbstractVisitor" not found in /home/safi/websites/smartelio/shopware/production/vendor/jms/serializer/src/XmlSerializationVisitor.php:19
Stack trace:
#0 {main}
  thrown in /home/safi/websites/smartelio/shopware/production/vendor/jms/serializer/src/XmlSerializationVisitor.php on line 19