Heya,
I'm trying to use the model to perform some image separation using the mnist database.
I literally copy your code and modify some parameters to match with the mnist database, but I get this weird mesage:

If you're wondering, here's how I create the train and test dataset:
(mnist_x_train, mnist_y_train), (mnist_x_test, mnist_y_test) = mnist.load_data()
Not sure what this is related to, any ideas?
Thanks,
Mat