ValueError: None when using Gradio client

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1

I get ValueError: None when trying to use the Gradio’s API.

from gradio_client import Client

client = Client("https://qwen-qwen1-5-72b-chat.hf.space/--replicas/2o2ps/")
result = client.predict(
		"Hello!!",	# str  in 'Input' Textbox component
		[["Hello!", None]],	# Tuple[str | Dict(file: filepath, alt_text: str | None) | None, str | Dict(file: filepath, alt_text: str | None) | None]  in 'Qwen1.5-72B-Chat' Chatbot component
		"Hello!!",	# str  in 'parameter_9' Textbox component
		api_name="/model_chat"
)
print(result)
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