Revision, error with blank message

I have the french desktop version of TurboTax, ImpotRapid Deluxe.

In the revision process, it reports that there's 1 error in the declaration, but the message is blank, no text.

When I click the button to resolve the error ("Résoudre"), it bring me to a new page, totally blank with only the "Continue" button.

How am I suppose to know what need fixing?

 

And, since this is very likely a software bug, why on earth is the Community the only place to post question??