I have been experiencing the same error for almost a few weeks sporadically on 3 of my 4 sites, I finally got someone at Godaddy who knew what was going on. It appears that with WP 4.5 there was a main error with “Object Cache” that in turn was giving errors on certain plugins. I was advised that “Mark” the creator of WP was working on a fix
The rep went into my dashboard on all 3 sites under WP content folder and disabled the object cache. He did this under the section Object_Cache and renamed it
He said that once there is a new automatic Wp update then it should probably be OK and not mess it up as hopefully that will contain the fix.
Why this is happening on some sites and not others? Who the heck knows but I am hoping this resolves it.
