ValueError("'arr' does not have a suitable array shape for any mode.") ERROR

[kush-1277]

We are getting the following error while executing autonomous.py in RPi 3 Model B v1.2

Traceback (most recent call last):
File "autonomous.py", line 92, in
main()
File "autonomous.py", line 89, in main
autonomous_control(model)
File "autonomous.py", line 27, in autonomous_control
direction = predictor.predict(stream)
File "/home/pi/test/mu/multunus/predict.py", line 33, in predict
input_layer_size, number_of_labels, x_value = _convert_stream_to_array(stream)
File "/home/pi/test/mu/multunus/predict.py", line 58, in _convert_stream_to_array
resized_image_array = imresize(image_array, IMAGE_DIMENSIONS)
File "/usr/lib/python3/dist-packages/scipy/misc/pilutil.py", line 421, in imresize
im = toimage(arr, mode=mode)
File "/usr/lib/python3/dist-packages/scipy/misc/pilutil.py", line 238, in toimage
raise ValueError("'arr' does not have a suitable array shape for any mode.")
ValueError: 'arr' does not have a suitable array shape for any mode.

What could the mistake from our side???