Form 2210 Underpayment of Estimated Taxes Why?

Getting 1 error when validating Federal that throws up a Form 2210 and to Check IRS to Figure Penalty Box

Why is this happening?  Have never done annualized or estimated taxes.  Spouse got laid off last March due to Covid and received unemployment (MN Fed and State taxes withheld), along with Stimulus payments for both of us twice for 2020. I have no idea why this is popping up or what it is all about.  Need help with resolving this