Fatal error: Uncaught Error: Call to undefined function MageWorx\SeoXTemplates\Model\Converter\is_objec() in /var/www/html/audioonline/app/code/MageWorx/SeoXTemplates/Model/Converter/Product.php:258 Stack trace: #0 /var/www/html/audioonline/app/code/MageWorx/SeoXTemplates/Model/Converter/Product.php(126): MageWorx\SeoXTemplates\Model\Converter\Product->_convertCategories() #1 /var/www/html/audioonline/app/code/MageWorx/SeoXTemplates/Model/Converter.php(107): MageWorx\SeoXTemplates\Model\Converter\Product->__convert(Array, 'Pioneer DEH-X48...') #2 /var/www/html/audioonline/app/code/MageWorx/SeoXTemplates/Model/Observer/ConvertProductCategories.php(89): MageWorx\SeoXTemplates\Model\Converter->convert(Object(Magento\Catalog\Model\Product\Interceptor), 'Pioneer DEH-X48...', true) #3 /var/www/html/audioonline/vendor/magento/framework/Event/Invoker/InvokerDefault.php(72): MageWorx\SeoXTemplates\Model\Observer\ConvertProductCategories->execute(Object(Magento\Framework\Event\Observer)) #4 /var/www/html/audioonline/vendor/magento/ in /var/www/html/audioonline/app/code/MageWorx/SeoXTemplates/Model/Converter/Product.php on line 258