FYI: I got this message too on a membership site. I deactivated all plugins (I had no caching plugin) except the membership one, still didn't work, but when I deactivated Wishlist Member, WordFence worked fine.
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FYI: I got this message too on a membership site. I deactivated all plugins (I had no caching plugin) except the membership one, still didn't work, but when I deactivated Wishlist Member, WordFence worked fine.