--exome: command not found & bin/configManta.py: No such file or directory

[yr542]

I keep getting the error:

bin/configManta.py: No such file or directory
--exome: command not found

I have installed Manta and this is the code I am using to access it:

###_____________________________________________________________________________________________

#  Directory paths

## The input directory:

input_dir="path/to/my/Batches1And2Files/"

## Outputs go:

output_dir = "path/to/my/Outputs/Primary_Assembly/"

## If someone installs Manta they must specify where the installation is placed:

MANTA_INSTALL_PATH ="path/to/my/manta-1.6.0.release_src/install"

###____________________________________________________________________________________________________

# The code to be run:

for file in ${input_dir}/*.bam
do
  ${MANTA_INSTALL_PATH}/bin/configManta.py \
    --bam $file \
    --referenceFasta /path/to/Homo_sapiens.GRCh38.dna_sm.primary_assembly.fa \
    --runDir ${output_dir}/$(basename ${file} .bam)_manta.vcf.gz
    --exome
done

When I check the file path, the configManta.py is there. According to the manta documentation ( https://github.com/Illumina/manta/blob/master/docs/userGuide/README.md ) it says we have to use the --exome flag. Why do I keep getting this error as the command is required?