Schedule C QBI deduction is not showing

Why doesn't TurboTax produce a QBI deduction from my Schedule C if I have $834 Net Income?  I selected the Yes box where it asks, "Is this Qualified Business Income"?  Last year this same Schedule C business produced a QBI deduction.  This year it shows $0 on my Qualified Business Income Component Worksheet.  Not sure if it matters, but I did have K-1 business income this year that DID produce a QBI deduction (last year that K1 was a loss).  Is the QBI for only one business or the other?