Warning: Undefined variable $block in /var/www/magento/html/app/code/BBNT/Wishlist/view/frontend/templates/not-signed-in-blank-page.phtml on line 4

Fatal error: Uncaught Error: Call to a member function escapeHtml() on null in /var/www/magento/html/app/code/BBNT/Wishlist/view/frontend/templates/not-signed-in-blank-page.phtml:4 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/Wishlist/view/frontend/templates/not-signed-in-blank-page.phtml on line 4