[Mediawiki-l] Loss of Session Data

[Travian Wiki]

When I login and try to post on my wiki I get an error, "Sorry! We could not process your edit due to a loss of session data. Please try again. If it still doesn't work, try logging out and logging back in."

I will occasionally get this error when I try to edit as a guest, but get it 100% of the time when I post as a user.  I can logout and login again, I click "Remember Me", I have tired clearing my cache (cookies/history), nothing works.

How do I fix this?

Thanks!

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