Unable to execute the ./genconfig

./genconfig.py cah-vm-migration genconfigresources.txt genconfigoutput/

Traceback (most recent call last):
File "./genconfig.py", line 406, in
main(sys.argv)
File "./genconfig.py", line 383, in main
config = get_config(urls, argv[1])
File "./genconfig.py", line 66, in get_config
resources.extend(get_resource_config(props, project, urls))
File "./genconfig.py", line 94, in get_resource_config
pstr = pstr.replace(url, ref)
TypeError: a bytes-like object is required, not 'str'