AttributeError: 'module' object has no attribute 'gen3D'

[tingweidaniel]

Sorry, it's my first time to create the issue, the typesetting may be messy.

I tried to run the command python ard.py input.txt, but got the error message as follow:

Traceback (most recent call last):
  File "ard.py", line 9, in <module>
    from ard.main import ARD, readInput
  File "/mnt/d/AutomaticReactionDiscovery/ard/main.py", line 21, in <module>
    import ard.gen3D as gen3D
  File "/mnt/d/AutomaticReactionDiscovery/ard/gen3D.py", line 25, in <module>
    import ard.node as node
  File "/mnt/d/AutomaticReactionDiscovery/ard/node.py", line 18, in <module>
    import ard.gen3D as gen3D
AttributeError: 'module' object has no attribute 'gen3D'

I deleted the .pyc file in ard directory and reran the command again, but it still got this error message. What's wrong in it? Thanks for replying.

My version of python is 2.7.15.