WP_CACHE error

Is there any way to use W3 Total Cache without FTP?

I just installed W3 Total Cache and I have the following messages at the top of my dashboard as well as the W3 Total Cache settings page:

FTP credentials don’t allow to write to file /home/public/wp-config.php

That is correct. My site does not have any FTP access. I use SSH and wp-cli.

W3 Total Cache Error: Files and directories could not be automatically created to complete the installation.

Please execute commands manually
or use FTP form to allow W3 Total Cache make it automatically.

… along with two buttons: “View Required Changes” and “Update via FTP”.

The required changes are as follows:

Edit file /home/public/wp-config.php and add next lines:

/** Enable W3 Total Cache */
define('WP_CACHE', true); // Added by W3 Total Cache

I’ve already made the required changes, but the error message persists.

Is there any way to resolve this?