when I use python to run the ncltpoles.py in ubuntu16.04, I met thiserror

:
2012-01-08
Traceback (most recent call last):
File "ncltpoles.py", line 516, in
save_global_map()
File "ncltpoles.py", line 119, in save_global_map
with progressbar.ProgressBar(max_value = len(imaps)) as bar:
TypeError: init() got an unexpected keyword argument 'max_value'