Cats & Dogs classifier

Getting stuck with cats vs dogs ML course.

history = model.fit(x=augmented_images,
validation_data=val_data_gen,
epochs=10,
steps_per_epoch=2000,
validation_steps=1000)

ValueError: Layer sequential_10 expects 1 inputs, but it received 5 input tensors

Can anyone help me understand this issue?

Challenge: Cat and Dog Image Classifier

Link to the challenge: