Trouble in saving the Keras model to the Bentoml model store

[rxiaogit]

Versions installed on Windows 11 desktop:
bentoml 1.2.9
keras 3.1.1
tensorflow 2.16.1

The Issue:
After training a Keras model of CNN with the MNIST dataset, need to save the trained Keras model
to the Bentoml model store, but always got the ValueError complaining about the arguments of ['signatures', 'options']
not supported, though those were never passed as arguments in the save_model() call.

See the python codes below:

def main():

import bentoml
import tensorflow as tf
from tensorflow import keras

"""Trains a model for classifying digits using the MNIST dataset."""
train_images, train_labels, test_images, test_labels = prepare_mnist_training_data()

model = build_convnet_model(INPUT_SHAPE, NUM_CLASSES)

model = train_model(
    model, train_images, train_labels, test_images, test_labels, NUM_EPOCHS
)

# save the model to bento model store 
# model.save("cnn_model.keras")

bentoml.keras.save_model("keras_cnn", model)

if name == "main":
main()

And the error messages when running above codes:

Traceback (most recent call last):
File "C:\Users\rxiao\Tensorflow-Tutorial\mldeployment\mldeployment\training.py", line 138, in
main()
File "C:\Users\rxiao\Tensorflow-Tutorial\mldeployment\mldeployment\training.py", line 134, in main
bentoml.keras.save_model("keras_cnn", model)
File "C:\Users\rxiao\anaconda3\envs\tf\Lib\site-packages\bentoml_internal\frameworks\keras.py", line 267, in save_model
model.save(
File "C:\Users\rxiao\AppData\Roaming\Python\Python311\site-packages\keras\src\utils\traceback_utils.py", line 123, in error_handler
raise e.with_traceback(filtered_tb) from None
File "C:\Users\rxiao\AppData\Roaming\Python\Python311\site-packages\keras\src\models\model.py", line 309, in save
raise ValueError(
ValueError: The following argument(s) are not supported: ['signatures', 'options']

Is there a bug in the bentoml._internal.frameworks.keras library?
Or What else do I miss here?

Thanks in advance for your help!!