fail to open fasta file

[hafizmtalha]

I am facing this issue while running genotyphi. File path is correct and it is a fasta file

[fai_build] fail to open the FASTA file temp_reference.fasta
Could not build fai index temp_reference.fasta.fai
Traceback (most recent call last):
File "genotyphi.py", line 472, in
main()
File "genotyphi.py", line 339, in main
run_command(['samtools', 'faidx', 'temp_reference.fasta']) # index fasta file
File "genotyphi.py", line 300, in run_command

[katholt]

looks like you don't have write permissions in the directory where the fasta file is stored, permissions are required to index the file for use with samtools