Did you use the non filer portal to register for the stimulus payment? If you did, a tax return was efiled for you with $0 income. That efiled return now prevents you from efiling your actual return. The portal was only for use by persons not filing a tax return.
Here is what to do now: https://ttlc.intuit.com/community/tax-topics/help/stimulus-how-to-file-your-return-after-getting-rej...
