Serializing Error ,when trying to get relevant poses for dgs_types,

[SerdarHelli]

I am getting this error ,

config = SignDatasetConfig(name="dgs_types_poses", version="1.0.0", include_video=False, process_video=False, include_pose="holistic")
dgs_types = tfds.load('dgs_types', builder_kwargs=dict(config=config), data_dir='/content/drive/MyDrive/sing_language_datasets')

TypeError: Error while serializing feature views/pose/data: TensorInfo(shape=(None, None, 1, 576, 3), dtype=float32): 'NoneType' object cannot be interpreted as an integer