My efile was rejected as my spouses adjusted gross income was wrong even though we filed married filing jointly

Did you use the same AGI for you and your spouse from your 2018 tax return?  Both of your AGI's will be the same amount when filing jointly.

You can get a copy of your 2018 tax return, from TurboTax it will have your AGI.  Follow these steps to get a copy of your prior-year tax return.

Sign in to TurboTax making sure you're using the same TurboTax account (with the same username) as in prior years. 

1. Select Documents from the navigation when it appears.
2. Use the drop-down menu at the top of the screen to choose the tax year you want and then select Download PDF. 

This link  How do I access a prior year return? has additional information that you may find useful.