I got it working again!
The only thing I did (which I do not recommend!) is,
-Uninstall WordPress
-Delete all wp related folders and files, plugins from the server (do not delete your previous active theme).
-Re-install WordPress
-Activated the previous active theme and voilá, back online!
The error only went away when I activated the previous active theme.
Maybe someone could use this information. I’m glad the error is gone!
Also not working for me.
Deleted W3TC, deleted advanced-cache.php, db.php, wp-total-cache-config.php. Wanted to install W3TC again, got a lot of errors, deleted W3TC again and then I got the following error.
Fatal error: Call to undefined function wp_cache_init() in /home/”user”/domains/”domain”.com/public_html/wp-includes/load.php on line 409
Re-installed WordPress, still same error.
