Same! Receiving message "This wasnt expected, but we are working on it" for several days??!!

Make sure the internet connection is stable.  If you are using TurboTax Desktop make sure it is up-to-date and Windows are updated too. 

If issue persists, We suggest you to contact our Product support team. They have access to tools we don't have here in Community, like screenshare to see and help you Netfile.

Thanks for choosing TurboTax.