[HANDS-ON BUG] 2.3 LangGraph: The code in the notebook is not the same as in course page

[ivanignatiev]

Describe the bug

Code present in https://huggingface.co/learn/agents-course/unit2/langgraph/first_graph is not the same as in notebook https://huggingface.co/agents-course/notebooks/blob/main/unit2/langgraph/mail_sorting.ipynb

For example, email_category is missing in Step 2

To Reproduce

Compare code blocks in https://huggingface.co/learn/agents-course/unit2/langgraph/first_graph and https://huggingface.co/agents-course/notebooks/blob/main/unit2/langgraph/mail_sorting.ipynb

Additional context

LangGraph unit.

[smagara]

Seems to be missing the LangFuse Step #6 from this commit.

The mdx has this section as Step #6, but the Jupyter seems to have it as Step #5 and it didn't get deployed, if that's a clue...

[rsantosvisionlab]

Hello:

It is indeed different, code from web than colab or github.
an example:

• in the web code, ,there is an issue with
  email_graph.add_edge("draft_response", "notify_mr_hugg")

you get an error: ValueError: 'draft_response' is already being used as a state key.

´draft_response´ should be replace in some places by something different.