I did my taxes for the first time after getting married, I had this same error message and couldn't find any way to get past it. So frustrating. Turbotax asking questions about the spouse I apparently don't have lol. What finally worked for me was I updated my marital status in my CRA account to married, and made sure my address was updated as well. I then signed out of everything, signed back in, started a completely new return, and the error message was gone.
