Delete the line
/home/barbar84/public_h.../wp-admin
File: widgets.php

Dòng [57/582]:
<p>' . __( 'The Available Widgets section contains all the widgets you can choose from. Once you drag a widget into a sidebar, it will open to allow you to configure its settings. When you are happy with the widget settings, click the Save button and the widget will go live on your site. If you click Delete, it will remove the widget.' ) . '</p>',
Fix

Ấn tiếp tục để Delete và ở lại trang, ấn Delete để Delete và quay về List dòng
Function