Due to all the issues with the pandemic and the stimulus money, the IRS had to delete all of our information and re-enter it manually. They made a LOT of mistakes doing so. This is probably happening because they didn't get your last year's information in the system correctly. It has worked for several people to just choose the option that says I didn't file last year. Or you can try putting a zero.
This is an error with the IRS database and e-file servers so beyond these there are no other options except to print out your returns and mail them in.
