WP Super Cache Warning!

Our website dashboard shows: "Your server is configured to show files and directories, which may expose sensitive data such as login cookies to attackers in the cache directories. That has been fixed by adding a file named index.html to each directory. If you use PHP or legacy caching, consider moving the location of the cache directory on the Advanced Settings page."

Due to above reason, we can not login wp-admin successfully. Support access has been granted.

Please help to fix
Thanks,