For the first block, where we are creating a sequential model for the first time, the code “summary(happy_model)” throws the following error: “AttributeError: The layer has never been called and thus has no defined output shape.” On researching a bit, I found that the error is because we haven’t given an input to the model. How to resolve this error?
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The Function ZeroPadding2D has an attribute was not set with this shape
input shape of 64 x 64 x 3, You are receiving this error because
Encoder layer isn’t complete that because the input shape is generally the shape of the input data provided to the Keras model while training . The model cannot know the shape of the training data. The shape of other tensors(layers) is computed automatically.
The introduction to the Sequential API that they give in the notebook is pretty minimal. It might be a good idea to start by reading this thread created by a fellow student which has a much nicer introduction to the Sequential and Functional APIs.