I just update the versus of W3tc, that's give me some fatal error.
So I use a backup of the website from my host, (back up before I did the update), I still got the same trouble : ( ! ) Fatal error: Call to undefined function wp_start_object_cache() in /wp-settings.php on line 79
Should I clean the cache of wordpress? if yes where I can do it thrue the FTP, knowing that I have no more access to the website (frontend and backend), I'm a bit lost to putt back the website on line...
Any help would be welcome.
thanks in advance