sinto fragments empty output?!

[Castel-Tao]

"sinto fragments
-b ${bam_dir_2}/alignment.sorted.bam
-f ${bam_dir_2}/fragments.bed
--min_mapq 30
--barcodetag DB
--nproc $NT
--collapse_within"

This is a line in my bam file, and I use DB as --barcodetag.
I tried various parameters, but the output was always empty

E200025695L1C042R03302544453/2 163 chr1 13323 45 50M = 13326 53 CCCAGGTGGAGGTCAAAGCCACCTTTGGTTCAGCCATTGCAGCTGTGTGG
F1?F3%FCF?8FFFDFFF0FFFFCFFCFDF<.9FBE5FEF(>FC?FEFGD NM:i:3 MD:Z:3T27T8T9 CB:Z:TAGATCTAATTGGTATTGTC DB:Z:CELL3469_N1