plot_model() got an unexpected keyword argument 'to_file'

The error message "plot_model() got an unexpected keyword argument 'to_file'" usually occurs when you are trying to use the `to_file` argument in the `plot_model()` function of Keras, which is not a valid argument.

Instead of using `to_file`, you can use `show_shapes` to visualize the model's architecture and save the plot to a file using a separate function like `savefig()`.

Here's an example:

from keras.utils import plot_model
import matplotlib.pyplot as plt

# define your Keras model here

# visualize the model architecture
plot_model(model, show_shapes=True)

# save the plot to a file
plt.savefig('my_model.png')