customer-support langgraph issue "No passenger ID configured"

[AtmehEsraa]

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Example Code

import shutil
import uuid

# Let's create an example conversation a user might have with the assistant
tutorial_questions = [
    "Hi there, what time is my flight?",
    "Am i allowed to update my flight to something sooner? I want to leave later today.",
    "Update my flight to sometime next week then",
    "The next available option is great",
    "what about lodging and transportation?",
    "Yeah i think i'd like an affordable hotel for my week-long stay (7 days). And I'll want to rent a car.",
    "OK could you place a reservation for your recommended hotel? It sounds nice.",
    "yes go ahead and book anything that's moderate expense and has availability.",
    "Now for a car, what are my options?",
    "Awesome let's just get the cheapest option. Go ahead and book for 7 days",
    "Cool so now what recommendations do you have on excursions?",
    "Are they available while I'm there?",
    "interesting - i like the museums, what options are there? ",
    "OK great pick one and book it for my second day there.",
]

# Update with the backup file so we can restart from the original place in each section
shutil.copy(backup_file, db)
thread_id = str(uuid.uuid4())

config = {
    "configurable": {
        # The passenger_id is used in our flight tools to
        # fetch the user's flight information
        "passenger_id": "3442 587242",
        # Checkpoints are accessed by thread_id
        "thread_id": thread_id,
    }
}


_printed = set()
for question in tutorial_questions:
    events = part_1_graph.stream(
        {"messages": ("user", question)}, config, stream_mode="values"
    )
    for event in events:
        _print_event(event, _printed)

Description

I'm running the same code as in the documentation, and when I try to run it, I get 'No passenger ID configured.'

System Info

'

[dosubot[bot]]

The error "No passenger ID configured" suggests that the passenger_id is not being correctly passed or recognized in the config dictionary. Here are a few steps to troubleshoot and resolve this issue:

1. Ensure Correct Key Usage: Verify that the passenger_id key is correctly placed within the config dictionary. It should be under the configurable key as shown in your example.

2. Check for Typographical Errors: Ensure there are no typos in the key names. The key should be exactly "passenger_id".

3. Debugging Tools: Use the debugging tools provided by LangChain to trace the flow of the config dictionary and identify where the passenger_id might be getting lost or misconfigured. You can enable verbose or debug mode to get more detailed logs:

   from langchain.globals import set_debug
   
   set_debug(True)
   agent_executor = AgentExecutor(agent=agent, tools=tools)
   agent_executor.invoke(
       {"input": "Who directed the 2023 film Oppenheimer and what is their age in days?"}
   )

4. Validate Configuration: Ensure that the config dictionary is being passed correctly to the part_1_graph.stream method. You can print the config dictionary before passing it to the method to verify its contents:

   print(config)
   events = part_1_graph.stream(
       {"messages": ("user", question)}, config, stream_mode="values"
   )

5. Environment Variables: If the passenger_id is expected to be retrieved from environment variables, ensure that these variables are correctly set.

6. Additional Logging: Use LangChain's additional logging and tracing tools to get more insights:

   from langchain_core.tracers.langchain import LangChainTracer, get_client, log_error_once, wait_for_all_tracers
   
   # Example usage
   tracer = LangChainTracer()

By following these steps, you should be able to identify and resolve the issue with the passenger_id configuration. If the problem persists, consider using the detailed logging and tracing tools to pinpoint the exact location where the configuration might be failing ^[1][2][3].

To continue talking to Dosu, mention @dosu.

[fsuarezj]

I had the same issue.

I'm not an expert and I don't know very well how ensure_config works, but checking this https://api.python.langchain.com/en/latest/runnables/langchain_core.runnables.config.ensure_config.html it seems that if you don't pass a config json as an argument to ensure_config, it takes None as default

For me, it worked when, in the fetch_user_flight_information() function, I called ensure_config with the argument:

...
thread_id = str(uuid.uuid4())
configjson = {
    "configurable": {
        # The passenger_id is used in our flight tools to
        # fetch the user's flight information
        "passenger_id": "3442 587242",
        # Checkpoints are accessed by thread_id
        "thread_id": thread_id,
    }
}

def fetch_user_flight_information() -> list[dict]:

    config = ensure_config(configjson)  # Fetch from the context
...