TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

[ArtificialZeng]

Traceback (most recent call last):
File "object_detect.py", line 118, in
feed_dict={image_tensor: image_np_expanded})
File "/home/dhqt/Anaconda3/envs/peopleCountingVideo/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 889, in run
run_metadata_ptr)
File "/home/dhqt/Anaconda3/envs/peopleCountingVideo/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1089, in _run
np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)
File "/home/dhqt/Anaconda3/envs/peopleCountingVideo/lib/python3.5/site-packages/numpy/core/numeric.py", line 501, in asarray
return array(a, dtype, copy=False, order=order)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

[ArtificialZeng]

don't you have requirements.txt?