In reviewing your return, I have found the error. In the Mortgage Interest section of your Federal return, you have two entries. I believe the first one is correct. The second entry reports no Interest, only Real Estate Tax in the same amount as the first entry. It was also checked as a 'Refinance'. You can delete the second entry by typing '1098' in the Search area, then click on 'Jump to 1098'.
This second entry is what populated a 0 on Schedule A, Line 8b, (Mortgages not reported on a 1098), which should be blank. It also doubled the amount of Property Tax on Line 5b.
In FORMS mode, I deleted Schedule A and then went back through the Mortgage Interest screens again. Schedule A no longer has the 0 on Line 8b, and there is no Review error for Minnesota pertaining to Schedule A.
Thank you for your patience.
@herbjanes