I need my business prior year income to e file my state tax form for my LLC but I can't access the old return since I'm ready to file this years, now what?

For some reason last years business income did not automatically populate into my state return and it wants me to manually type it in. I don't know that off the top of my head and need to look at last years return. But when I go to the home page it immediately says "pick up where you left off" and nothing else is an option. Feel like I am stuck in an infinite loop.