[Bug]: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message. Retrying... (1/3)

[rokbenko]

What happened?

Using CrewAI (which utilizes LiteLLM in the background) with Anthropic LLM via Bedrock and setting the human_input parameter to a CrewAI task to True gives an error right after submitting (i.e., pressing the Enter button) feedback in the terminal:

Relevant part of the code:

/.../

@task
    def research_task(self) -> Task:
        return Task(
            config=self.tasks_config["research_task"],
            llm=LLM(
                model="bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0",
            ),
            expected_output="Expected output should be a Pydantic model of TaskOutput type with xxxxx, yyyyy and zzzzz properties.",
            output_pydantic=TaskOutput,
            human_input=True,
        )

/.../

Relevant log output

ERROR:root:LiteLLM call failed: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message
 Error during LLM call to classify human feedback: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message. Retrying... (1/3)
ERROR:root:LiteLLM call failed: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message
 Error during LLM call to classify human feedback: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message. Retrying... (2/3)
ERROR:root:LiteLLM call failed: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message
 Error during LLM call to classify human feedback: litellm.BadRequestError: Invalid Message bedrock requires at least one non-system message. Retrying... (3/3)
 Error processing feedback after multiple attempts.

Are you a ML Ops Team?

Yes

What LiteLLM version are you on ?

v1.57.4

Twitter / LinkedIn details

No response