Unfortunately this isn’t an intermittent issue for me. It happens 90% of the time I load the plugins page. Occasionally it won’t happen — normally on the 2nd or more refreshes. But in my experience if it’s the first time I’ve loaded the plugin page in a while, it will happen.
It turns out this problem is not with Wordfence. Even with the plugin disabled I still get this error periodically. Any other tips or places I could look to see what’s going on? Have you heard of this problem from anyone else?