[MM3-users] Django error - External IP

I am seeing this error frequently:

Subject: [Django] ERROR (EXTERNAL IP): Internal Server Error: /archives/list/jackrail@list.jackrail.org/message/new

Internal Server Error: /archives/list/jackrail@list.jackrail.org/message/new

Error at /archives/list/jackrail@list.jackrail.org/message/new error 14 from memcached_get(:2:User:11:subscriptions)

Request Method: GET Request URL: https://list.jackrail.org/archives/list/jackrail@list.jackrail.org/message/n...

... followed by many many pages of settings information, none of which is informative to me.

What does this signify? I am trying to bring my list to a go live state, but this does not bode well.

I can send the full diagnostic (long) if need be.

Andrew