Fatal error: Uncaught Error: Class "Magento\Wishlist\Block\AbstractBlock" not found in /var/www/magento/html/app/code/BBNT/Wishlist/Block/Customer/Wishlist.php:21 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/Wishlist/Block/Customer/Wishlist.php on line 21