Cannot convert to formats other than n5. eg. .tiff, .png, .jpg

[noorul-wahab]

While converting an Isyntax file to raw tiff file using the command below gerenrated 'No such file or directory' error.
Command:
isyntax2raw write_tiles --file_type='tiff' input.isyntax outdir
Error:
FileNotFoundError: [Errno 2] No such file or directory: '...path_to_directory/1/0'

Traceback (most recent call last):
File "/usr/local/bin/isyntax2raw", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.6/dist-packages/isyntax2raw/cli/isyntax2raw.py", line 79, in main
cli()
File "/usr/local/lib/python3.6/dist-packages/Click-7.0-py3.6.egg/click/core.py", line 764, in call
return self.main(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/Click-7.0-py3.6.egg/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python3.6/dist-packages/Click-7.0-py3.6.egg/click/core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.6/dist-packages/Click-7.0-py3.6.egg/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python3.6/dist-packages/Click-7.0-py3.6.egg/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/isyntax2raw/cli/isyntax2raw.py", line 70, in write_tiles
wt.write_label_image()
File "/usr/local/lib/python3.6/dist-packages/isyntax2raw/init.py", line 272, in write_label_image
self.write_image_type("LABELIMAGE", 1)
File "/usr/local/lib/python3.6/dist-packages/isyntax2raw/init.py", line 297, in write_image_type
self.create_tile_directory(series, 0, width, height)
File "/usr/local/lib/python3.6/dist-packages/isyntax2raw/init.py", line 330, in create_tile_directory
os.mkdir(tile_directory)