runtime error

/home/user/.local/lib/python3.8/site-packages/gradio/deprecation.py:40: UserWarning: `optional` parameter is deprecated, and it has no effect warnings.warn(value) Caching examples at: '/home/user/app/gradio_cached_examples/17' Traceback (most recent call last): File "app.py", line 39, in <module> demo = gr.Interface( File "/home/user/.local/lib/python3.8/site-packages/gradio/interface.py", line 456, in __init__ self.render_article() File "/home/user/.local/lib/python3.8/site-packages/gradio/blocks.py", line 1200, in __exit__ self.config = self.get_config_file() File "/home/user/.local/lib/python3.8/site-packages/gradio/blocks.py", line 1176, in get_config_file "input": list(block.input_api_info()), # type: ignore File "/home/user/.local/lib/python3.8/site-packages/gradio_client/serializing.py", line 41, in input_api_info return (api_info["serialized_input"][0], api_info["serialized_input"][1]) KeyError: 'serialized_input'

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