t2g.py tconversion of ranscript to gene name text file is returning empty file

Question

[makwana.kd]

Hi , I am trying to build a genome index using a Kallisto to analyze 10x data. I am at the step of making a transcript to gene map. I am using t2g.py utility for the above-mentioned step.

my command is:

./t2g.py < Mus_musculus.GRCm38.96.gtf > transcripts_to_genes.txt

This command is generating an empty output file.

Any help is much appreciated