Error building Conditional Router Component

[GordeyChernyy]

Component Conditional Router failed to build with error "You must specify an output name to call stop"

Version

• v1.0.0rc0

To Reproduce

1. Add Component Conditional Router
2. Build Component
3. You get the error message: "You must specify an output name to call stop"

To Solve

I added if len(self.vertex.outputs) < 2 condition in custom_component.py

https://github.com/langflow-ai/langflow/blob/a9b2f5f82e0e4ea849914c2f6e2e7082dbd54c61/src/backend/base/langflow/custom/custom_component/custom_component.py#L99

    def stop(self, output_name: str | None = None):
        if not output_name and self.vertex and len(self.vertex.outputs) == 1:
            output_name = self.vertex.outputs[0]["name"]
        else:
            if len(self.vertex.outputs) < 2:
                raise ValueError("You must specify an output name to call stop")

[dosubot[bot]]

Hey @GordeyChernyy 👋, I'm here to help you with any bugs, questions, or contributions you have. Let's work on resolving this issue together.

To resolve the error "You must specify an output name to call stop" when building the Conditional Router Component in version v1.0.0rc0, you need to ensure that the stop method is called with a valid output name. The provided code already specifies the output names correctly in the stop method calls.

Here is the relevant part of the code that shows the correct usage:

def true_response(self) -> Message:
    result = self.evaluate_condition(self.input_text, self.match_text, self.operator, self.case_sensitive)
    if result:
        self.stop("false_result")
        response = self.message if self.message else self.input_text
        self.status = response
        return response
    else:
        self.stop("true_result")
        return Message()

def false_response(self) -> Message:
    result = self.evaluate_condition(self.input_text, self.match_text, self.operator, self.case_sensitive)
    if not result:
        self.stop("true_result")
        response = self.message if self.message else self.input_text
        self.status = response
        return response
    else:
        self.stop("false_result")
        return Message()

In both true_response and false_response methods, the stop method is called with either "false_result" or "true_result", which are valid output names defined in the outputs list:

outputs = [
    Output(display_name="True Route", name="true_result", method="true_response"),
    Output(display_name="False Route", name="false_result", method="false_response"),
]

If you are still encountering the error, ensure that the stop method implementation in the Component class correctly handles the provided output names ^[1].

To continue talking to Dosu, mention @dosu.

[lys791227]

Component Conditional Router failed to build with error "You must specify an output name to call stop" Version： v1.0.5 ValueError: You must specify an output name to call stop [06/27/24 16:23:20] ERROR 2024-06-27 16:23:20 - ERROR - service - Error stopping tracing service: 'NoneType' object has no attribute 'cancel'

[bravelll]

Component Conditional Router failed to build with error "You must specify an output name to call stop" Version： v1.0.5 ValueError: You must specify an output name to call stop [06/27/24 16:23:20] ERROR 2024-06-27 16:23:20 - ERROR - service - Error stopping tracing service: 'NoneType' object has no attribute 'cancel'

Component Conditional Router failed to build with error "You must specify an output name to call stop"

Version

• v1.0.0rc0

To Reproduce

1. Add Component Conditional Router
2. Build Component
3. You get the error message: "You must specify an output name to call stop"

To Solve

I added if len(self.vertex.outputs) < 2 condition in custom_component.py

https://github.com/langflow-ai/langflow/blob/a9b2f5f82e0e4ea849914c2f6e2e7082dbd54c61/src/backend/base/langflow/custom/custom_component/custom_component.py#L99

    def stop(self, output_name: str | None = None):
        if not output_name and self.vertex and len(self.vertex.outputs) == 1:
            output_name = self.vertex.outputs[0]["name"]
        else:
            if len(self.vertex.outputs) < 2:
                raise ValueError("You must specify an output name to call stop")

Component Conditional Router failed to build with error "You must specify an output name to call stop" Version： v1.0.5 ValueError: You must specify an output name to call stop [06/27/24 16:23:20] ERROR 2024-06-27 16:23:20 - ERROR - service - Error stopping tracing service: 'NoneType' object has no attribute 'cancel'

[anovazzi1]

Hello, Sorry for the delay. Did you try using the new version? Does the error still persist?

[Alex-Poon]

@anovazzi1 is this component the conditional routing you said was in the new version? Or is it another component? (i.e. route based on previous user's message)

[lys791227]

v1.0.5

v1.0.5，thanks

[zhxsxuan]

Component Conditional Router failed to build with error "You must specify an output name to call stop"

Version

• v1.0.0rc0

To Reproduce

1. Add Component Conditional Router
2. Build Component
3. You get the error message: "You must specify an output name to call stop"

To Solve

I added if len(self.vertex.outputs) < 2 condition in custom_component.py

https://github.com/langflow-ai/langflow/blob/a9b2f5f82e0e4ea849914c2f6e2e7082dbd54c61/src/backend/base/langflow/custom/custom_component/custom_component.py#L99

    def stop(self, output_name: str | None = None):
        if not output_name and self.vertex and len(self.vertex.outputs) == 1:
            output_name = self.vertex.outputs[0]["name"]
        else:
            if len(self.vertex.outputs) < 2:
                raise ValueError("You must specify an output name to call stop")

Tried adding if len(self.vertex.outputs) < 2 condition in custom_component.py, still doesn't work.

[lys791227]

 谢谢！

------------------ 原始邮件 ------------------ 发件人: "Hongxuan @.>; 发送时间: 2024年7月2日(星期二) 中午11:14 收件人: @.>; 抄送: @.>; @.>; 主题: Re: [langflow-ai/langflow] Error building Conditional Router Component (Issue #2268)

Component Conditional Router failed to build with error "You must specify an output name to call stop"

Version

v1.0.0rc0

To Reproduce

Add Component Conditional Router

Build Component

You get the error message: "You must specify an output name to call stop"

To Solve

I added if len(self.vertex.outputs) < 2 condition in custom_component.py

https://github.com/langflow-ai/langflow/blob/a9b2f5f82e0e4ea849914c2f6e2e7082dbd54c61/src/backend/base/langflow/custom/custom_component/custom_component.py#L99 def stop(self, output_name: str | None = None): if not output_name and self.vertex and len(self.vertex.outputs) == 1: output_name = self.vertex.outputs[0]["name"] else: if len(self.vertex.outputs) < 2: raise ValueError("You must specify an output name to call stop")
Tried adding if len(self.vertex.outputs) < 2 condition in custom_component.py, still doesn't work.

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[anovazzi1]

@Alex-Poon yes, it was, I'll take a look and fix it ASAP

[carlosrcoelho]

Hi @GordeyChernyy, 
 I hope you're doing well. Just a friendly reminder that if we do not hear back from you within the next 3 days, we will close this issue. If you need more time or further assistance, please let us know.


Thank you for your understanding!

[carlosrcoelho]

Thank you for your contribution! This issue will be closed. If you have any questions or encounter another problem, please open a new issue and we will be ready to assist you.