Yes, Tennessee doesn't have a state income tax, so you can leave boxes 15 through 20 blank in the TurboTax program.
Tennessee does not have a personal income tax. Leave boxes 15 thru 17 blank (empty) on the W-2 you are entering.
The computter program needs to understand this. Because this appears to either be a programming error, or a blatant LIE by Trubo tax.
The Tennessee Hall Income tax was repealed for tax periods that begin on January 1, 2021, or later.