Apparently MO believes you should have filed a MO return for that year. You have not told us if you lived or worked in MO during 2019, so no one here knows if you should have filed a MO return.
To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
Customer support is available from 5 a.m. to 5 p.m. Pacific time daily Monday- Friday
**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.**
