ValidationError: 2 validation errors for HumanMessage at v1.0.0a59 about langflow HOT 2 OPEN

To resolve the ValidationError when connecting ChatInput to OpenAI without a prompt, you need to ensure that the input_value is correctly formatted as a HumanMessage. The error indicates that the content field is expected to be a string but is being provided as a list, or vice versa.

Here's how you can fix it:

1. Ensure input_value is a string: When adding input_value to the messages list, it should be a string. If input_value is already a Record, you need to convert it to a HumanMessage correctly.

2. Modify the get_chat_result function: Ensure that input_value is properly converted to a HumanMessage.

Here is the relevant part of the code that needs to be checked and possibly modified:

def get_chat_result(self, runnable: BaseChatModel, stream: bool, input_value: str, system_message: Optional[str] = None):
    messages: list[Union[HumanMessage, SystemMessage]] = []
    if not input_value and not system_message:
        raise ValueError("The message you want to send to the model is empty.")
    if system_message:
        messages.append(SystemMessage(content=system_message))
    if input_value:
        messages.append(HumanMessage(content=input_value))
    if stream:
        return runnable.stream(messages)
    else:
        message = runnable.invoke(messages)
        result = message.content
        if isinstance(message, AIMessage):
            status_message = self.build_status_message(message)
            self.status = status_message
        else:
            self.status = result
        return result

Ensure that input_value is a string when passed to HumanMessage:

if input_value:
    if isinstance(input_value, Record):
        input_value = input_value.get_text()  # Convert Record to string
    messages.append(HumanMessage(content=input_value))

This ensures that input_value is correctly formatted as a string before being used to create a HumanMessage ^[1][2].

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Already reported earlier at #2182 for a58 and continues to be an issue with a59 version as well.

from langflow.