Can you solve this error preventing filing? Solution for the zero in Sched C, Section 2, about building

[mesquitebean]

You didn't say what Line number of Schedule C, Part II is the issue.   You only said "building."   So I'll take a guess.  Is it Line 27b by any chance (Energy Efficient Commercial Building Deduction)?     Here's a similar thread from last year.   Read the entire thread, and see if you have the same scenario, and if  the solution posted there by user @djkmann works for you.  It worked for several others in that thread.

https://ttlc.intuit.com/community/taxes/discussion/intuit-programming-error-home-business-sch-c-line...