This error occurs when you refresh or go back a page after generating the identity verification questions.
When the identity verification questions are generated, they need to be answered before any further progress can be made. Sometimes, you may see a question that you feel doesn't belong to you, or you may not know the answer immediately.
In these cases, please try to answer before returning to the guide. If you refresh, cancel, or "go back" a page before attempting an answer, you will need to try again using a new browser. If you do not have another browser, please clear your cache/cookies, log back in, and try again.