A common reason is for the AGI. Here's info on that
When did you file 2017? If it was late in the year try putting in zero for the AGI. And see this, https://ttlc.intuit.com/replies/5595742 If you can’t get it to efile you will have to print and mail it.
To review your tax return for any errors, do this:
I have also provided information on how to fix a rejected return. If any of the steps do not resolve the rejection error, you will need to print and paper file your return(s). Please review:
https://ttlc.intuit.com/replies/3302275