Missing output files

[Oksanak22]

Hello!

Could you please help me with the following issue:
When I run the Snakemake pipeline it give me an error:
"rule bwa_index_refgenome:
input: results/refgenome/Tb.rg.fa
output: results/refgenome/Tb.rg.fa.bwt
log: results/logs/results/refgenome/Tb.rg.fa.bwt.log
jobid: 2
benchmark: results/benchmarks/results/refgenome/Tb.rg.fa.bwt.bench.txt
reason: Missing output files: results/refgenome/Tb.rg.fa.bwt
wildcards: refgenome_id=Tb
resources: tmpdir=/tmp
"
I don't understand why I don't have Tb.rg.fa.bwt file. What did I do wrong?

Thank you.