Did you start entering 2019 into online? If you tried to use the Online version for a prior year you should try to clear it out so it's not accidentally filed as a 2020 return or transfers into next year. And so you can use it for 2020.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...
