[Python] mistralai - AttributeError: 'ChatMessage' object has no attribute 'model_dump'

I am trying to run a Mistral AI's python client code example shown below.

from mistralai.client import MistralClient
from mistralai.models.chat_completion import ChatMessage

model = "mistral-tiny"

client = MistralClient(api_key=userdata.get('MISTRAL_API_KEY'))

messages = [
ChatMessage(role="user", content="What is the best French cheese?")
]

# No streaming
chat_response = client.chat(
model=model,
messages=messages,
)


I keep getting AttributeError: 'ChatMessage' object has no attribute 'model_dump' but there is nothing about this anywhere.

Can someone help please?

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