Warning: Undefined variable $block in /var/www/magento/html/app/code/MGS/Lookbook/view/frontend/templates/product.phtml on line 1

Fatal error: Uncaught Error: Call to a member function getLookbook() on null in /var/www/magento/html/app/code/MGS/Lookbook/view/frontend/templates/product.phtml:1 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/MGS/Lookbook/view/frontend/templates/product.phtml on line 1