Ok, so, in order to e-file your 2017 taxes, the IRS requires your 2016 AGI for identity verification (unless you didn't file 2016 taxes; in that case enter 0 as your AGI).
You can read below about where to find your 2016 AGI.https://ttlc.intuit.com/replies/3301618
And, here's a link to help you locate your 2017 AGI: https://ttlc.intuit.com/replies/4168068
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