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I am trying to create two factor authentication but on validation security code step I get this error: Sorry, an error occurred while processing your request. 3kwKD6/7af35060/111017
In addition I was having problems using my two factor. It kept giving me the code was invalid error. I turned off Two Factor using the recovery code and tried setting up Two Factor again and got the original poster's error.
I continue to receive this error as of December 14, 2017. The first 2/3 of the error code are the same as OP's, except that the last 1/3 seems to change each time.