Filing 2020 taxes and Turbotax shows excess HSA contribution on 2019 Form 5329 of 1040 Filing -- how to correct?

I've seen a lot of people ask the question where they have accidentally doubled up their contribution on their current-year filing, but I have a slightly different problem...when doing my 2020 taxes, it directs me to enter the excess contribution from my 2019 5329 (line 48 I believe).  I go there and it does show 3,500 and that I paid a $51 fee there.

 

I'm assuming I accidentally doubled up last year and didn't notice it, and so this year it is telling me that I can withdraw the excess now to avoid the penalty.  I KNOW I didn't make an excess contribution, so I clearly just screwed up and double counted last year and didn't notice it.  Is there any EASY way to fix this so it doesn't make me pay another 6% again?  Bonus points if I can get my $51 back from last year.  If I have to file an amended return, that's probably a no-go from me.