After you file

NCperson · ‎December 29, 2020

I just re-read your actual question..

if there is an error om your 2019 return, fixing that error will not cause the stimulus to be paid. But you need to fix the error.

What will cause the stimulus to be paid is submission of the 2020 tax return,. This is a IRS FAQ that is similar to what you are asking:

Q B9. If the IRS used my 2018 tax return and determined that I am not eligible for a payment, and I ...

A9. No. If the IRS determined that you were ineligible for a payment based on your 2018 tax return prior to your filing a 2019 return, the IRS will not issue you a payment in 2020. If you meet the eligibility requirements based on your tax information in 2020, you may be eligible to claim the Recovery Rebate Credit when you file your 2020 federal income tax return in 2021.