some yaml load / path problem

Any idea what to do with this?

---------------------------------------------------------------------------
NotADirectoryError                        Traceback (most recent call last)
<ipython-input-2-b3b4887b0a68> in <module>()
      1 freq   = np.logspace(1, 3, 1000)
----> 2 ifo    = gwinc.load_ifo('aLIGO')
      3 ifo    = gwinc.precompIFO(ifo)
      4 noises = gwinc.noise_calc(ifo, freq)
      5 gwinc.plot_noise(ifo, noises)

~/anaconda3/envs/AI3/lib/python3.6/site-packages/pygwinc-0.1-py3.6.egg/gwinc/ifo/__init__.py in load_ifo(name_or_path)
     46 
     47     else:
---> 48         return Struct.from_file(path)

~/anaconda3/envs/AI3/lib/python3.6/site-packages/pygwinc-0.1-py3.6.egg/gwinc/struct.py in from_file(cls, path)
    287         (root, ext) = os.path.splitext(path)
    288 
--> 289         with open(path, 'r') as f:
    290             if ext in ['.yaml', '.yml']:
    291                 d = yaml.load(f, Loader=yaml_loader)

NotADirectoryError: [Errno 20] Not a directory: '/Users/rana/anaconda3/envs/AI3/lib/python3.6/site-packages/pygwinc-0.1-py3.6.egg/gwinc/ifo/aLIGO.yaml'