How to solve W3 Total Cache Error
1) Login to your cPanel
2) Choose File Manager
3) Go to the folder “wp-content”
4) Inside there got file name advanced-cache.php, db.php and object-cache.php
5) Rename it to advanced-cache1.php, db1.php and object-cache1.php.
6) Now you are able to browse your website back.
*If the problem still persists, may submit ticket to firstname.lastname@example.org