Error, can't publish answer in AnswersHub

Hello. I’m trying to publish an answer at:…-accessor.html
and I press Post your answer, select “as answer”, press OK and this error pops up:

Unable to execute your request

We’re sorry, but we’re unable to execute your request at this time. You may be seeing this page because you attempted to submit data on this site without first loading an appropriate form. Please attempt to visit the homepage of this site and then try your action again. If you believe this error is incorrect, please contact the site administrator(s).

Windows 10, Chrome 62