Getting an error while loading the RetinaNet model. Gives the following error :

[vaibhavsethia]

Traceback (most recent call last): File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/Demo.py", line 9, in detector.loadModel() File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/init.py", line 190, in loadModel model = resnet50_retinanet(num_classes=80) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/keras_retinanet/models/resnet.py", line 86, in resnet50_retinanet return resnet_retinanet(num_classes=num_classes, backbone='resnet50', inputs=inputs, kwargs) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/keras_retinanet/models/resnet.py", line 80, in resnet_retinanet model = retinanet.retinanet_bbox(inputs=inputs, num_classes=num_classes, backbone=resnet, kwargs) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/keras_retinanet/models/retinanet.py", line 347, in retinanet_bbox model = retinanet(inputs=inputs, num_classes=num_classes, kwargs) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/keras_retinanet/models/retinanet.py", line 302, in retinanet submodels = default_submodels(num_classes, anchor_parameters) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/keras_retinanet/models/retinanet.py", line 210, in default_submodels ('regression', default_regression_model(anchor_parameters.num_anchors())), File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/imageai/Detection/keras_retinanet/models/retinanet.py", line 125, in default_regression_model outputs = keras.layers.Reshape((-1, 4), name='pyramid_regression_reshape')(outputs) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/keras/engine/topology.py", line 554, in call output = self.call(inputs, kwargs) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/keras/layers/core.py", line 402, in call target_shape = self.compute_output_shape(input_shape)[1:] File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/keras/layers/core.py", line 385, in compute_output_shape input_shape[1:], self.target_shape) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/keras/layers/core.py", line 373, in _fix_unknown_dimension original = np.prod(input_shape, dtype=int) File "<__array_function__ internals>", line 6, in prod File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 2911, in prod keepdims=keepdims, initial=initial, where=where) File "/Users/irateleaf/PycharmProjects/Object_Detection/venv/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 90, in _wrapreduction return ufunc.reduce(obj, axis, dtype, out, **passkwargs) TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

[Duciwuci]

Are you using a conda enviroment?

[vaibhavsethia]

No, I'm using Pip with Pycharm

[Duciwuci]

#30 for a workaround see this discussion. But I got the same issue on my conda enviroment and also tried with virtualenv. Installing all packages globally didn't fix the issue as well.