Fatal error: Uncaught TypeError: Return value of Product::getContent() must be an instance of Iceberg\Engine\Database\Model\Model\ContentModel, null returned in /home/tqmsoft/domains/tqmsoft.com/htdocs/modules/products/src/Database/Product.php:359 Stack trace: #0 /home/tqmsoft/domains/tqmsoft.com/htdocs/modules/trainings/src/Database/TrainingRelationResolver.php(140): Product->getContent() #1 [internal function]: Training->{closure}() #2 /home/tqmsoft/domains/tqmsoft.com/htdocs/vendor/doctrine/collections/lib/Doctrine/Common/Collections/ArrayCollection.php(346): array_filter() #3 /home/tqmsoft/domains/tqmsoft.com/htdocs/modules/trainings/src/Database/TrainingRelationResolver.php(140): Doctrine\Common\Collections\ArrayCollection->filter() #4 /home/tqmsoft/domains/tqmsoft.com/htdocs/modules/trainings/src/Database/TrainingRelationResolver.php(143): Training->{closure}() #5 /home/tqmsoft/domains/tqmsoft.com/htdocs/modules/trainings/src/Database/TrainingRelationResolver.php(66): TrainingRelationResolver->resolveConnectedProduc in /home/tqmsoft/domains/tqmsoft.com/htdocs/modules/products/src/Database/Product.php on line 359