What are you entering a 2017 AGI for? You can only e-file a 2019 return. A 2017 AGI will not work to let you e-file a 2019 return. In order to e-file 2019, you need a 2018 AGI.
And if you are trying to e-file a 2018 return using that 2017 AGI, e-filing is permanently closed for 2018--you cannot e-file it. It has to be printed, signed and mailed.
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