You cannot e-file any kind of 2018 return from TurboTax. The only way you can file a 2018 return of any kind now is to print, sign and mail it. Don't stress yourself out trying to e-file it. You cannot do it.
Need the address for a mailed NY return?
https://www.tax.ny.gov/pit/file/return_assembly_mail.htm
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**