If you used a different tax year of Turbotax to file a different year that you need to file for- you will need to start your return from scratch using the proper TurboTax software for the year you are needing to file for.
Every year the government makes changes - therefore you must use the proper tax package for the year you need to file.
Here is for the 2019 tax year packages.
If you need to complete prior years click here.