Lagerbestand ändern Artikel Übersicht Fehler

Hallo Leute,

wir betreiben einen SW 5.6.0 und erhalten seit dem Update wenn wir im Backend über die Artikelübersicht einen z.B. Lagerbestand ändern möchten einen Error.

System: Es ist ein unbekannter Fehler aufgetreten, bitte überprüfe Deine Server-Logs

Error-Backend-Log Core Error:

Zusammenfassung

Doctrine\Common\Persistence\Mapping\MappingException: Class ‚‘ does not exist in /vendor/doctrine/persistence/lib/Doctrine/Common/Persistence/Mapping/MappingException.php:93 Stack trace:
#0 /vendor/doctrine/persistence/lib/Doctrine/Common/Persistence/Mapping/RuntimeReflectionService.php(24): Doctrine\Common\Persistence\Mapping\MappingException::nonExistingClass(‚‘)
#1 /vendor/doctrine/persistence/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php(250): Doctrine\Common\Persistence\Mapping\RuntimeReflectionService->getParentClasses(‚‘)
#2 /vendor/doctrine/persistence/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php(283): Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->getParentClasses(‚‘)
#3 /vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php(78): Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->loadMetadata(‚‘)
#4 /vendor/doctrine/persistence/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php(183): Doctrine\ORM\Mapping\ClassMetadataFactory->loadMetadata(‚‘)
#5 /vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php(382): Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->getMetadataFor(‚‘)
#6 /engine/Shopware/Components/MultiEdit/Resource/Product.php(171): Doctrine\ORM\EntityManager->find(NULL, NULL)
#7 /engine/Shopware/Controllers/Backend/ArticleList.php(114): Shopware\Components\MultiEdit\Resource\Product->save(Array)
#8 /engine/Library/Enlight/Controller/Action.php(192): Shopware_Controllers_Backend_ArticleList->saveSingleEntityAction()
#9 /engine/Library/Enlight/Controller/Dispatcher/Default.php(478): Enlight_Controller_Action->dispatch(‚saveSingleEntit…‘)
#10 /engine/Library/Enlight/Controller/Front.php(228): Enlight_Controller_Dispatcher_Default->dispatch(Object(Enlight_Controller_Request_RequestHttp), Object(Enlight_Controller_Response_ResponseHttp))
#11 /engine/Shopware/Kernel.php(184): Enlight_Controller_Front->dispatch()
#12 /vendor/symfony/http-kernel/HttpCache/SubRequestHandler.php(102): Shopware\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#13 /vendor/symfony/http-kernel/HttpCache/HttpCache.php(448): Symfony\Component\HttpKernel\HttpCache\SubRequestHandler::handle(Object(Shopware\Kernel), Object(Symfony\Component\HttpFoundation\Request), 1, true)
#14 /engine/Shopware/Components/HttpCache/AppCache.php(256): Symfony\Component\HttpKernel\HttpCache\HttpCache->forward(Object(Symfony\Component\HttpFoundation\Request), true, NULL)
#15 /vendor/symfony/http-kernel/HttpCache/HttpCache.php(238): Shopware\Components\HttpCache\AppCache->forward(Object(Symfony\Component\HttpFoundation\Request), true)
#16 /engine/Shopware/Components/HttpCache/AppCache.php(99): Symfony\Component\HttpKernel\HttpCache\HttpCache->pass(Object(Symfony\Component\HttpFoundation\Request), true)
#17 /www/htdocs/w00aa785/DEINEURL/shopware.php(122): Shopware\Components\HttpCache\AppCache->handle(Object(Symfony\Component\HttpFoundation\Request))
#18

Backend-Log Core Critical:

Zusammenfassung

Meldung: Class ‚‘ does not exist
Content:

Womit kann dies zusammenhängen?

Grüße und schönen Abend
Christian