Fatal error: Uncaught TypeError: Argument 1 passed to Magento\Catalog\Model\ResourceModel\Product\Interceptor::addAttributeByScope() must be an instance of Magento\Eav\Model\Entity\Attribute\AbstractAttribute, boolean given, called in /var/www/html/vendor/magento/module-eav/Model/Entity/AttributeLoader.php on line 73 and defined in /var/www/html/var/generation/Magento/Catalog/Model/ResourceModel/Product/Interceptor.php:423 Stack trace: #0 /var/www/html/vendor/magento/module-eav/Model/Entity/AttributeLoader.php(73): Magento\Catalog\Model\ResourceModel\Product\Interceptor->addAttributeByScope(false, '0-0') #1 /var/www/html/vendor/magento/module-eav/Model/Entity/AbstractEntity.php(532): Magento\Eav\Model\Entity\AttributeLoader->loadAllAttributes(Object(Magento\Catalog\Model\ResourceModel\Product\Interceptor), NULL) #2 /var/www/html/var/generation/Magento/Catalog/Model/ResourceModel/Product/Interceptor.php(479): Magento\Eav\Model\Entity\AbstractEntity->loadAllAttributes(NULL) #3 /var/www/html/vendor/magento/module-eav/Model/E in /var/www/html/var/generation/Magento/Catalog/Model/ResourceModel/Product/Interceptor.php on line 423