Fatal error: Uncaught Error: Cannot instantiate abstract class Plazathemes\Productlinks\Controller\Index\Attribute in /var/www/magento/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:111 Stack trace: #0 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Plazathemes\\Pro...', Array) #1 /var/www/magento/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Compiled->create('Plazathemes\\Pro...', Array) #2 /var/www/magento/vendor/magento/framework/App/ActionFactory.php(40): Magento\Framework\ObjectManager\ObjectManager->create('Plazathemes\\Pro...') #3 /var/www/magento/vendor/magento/framework/App/Router/Base.php(297): Magento\Framework\App\ActionFactory->create('Plazathemes\\Pro...') #4 /var/www/magento/vendor/magento/framework/App/Router/Base.php(158): Magento\Framework\App\Router\Base->matchAction(Object(Magento\Framework\App\Request\Http), Array) #5 /var in /var/www/magento/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php on line 111