BadRequestError: 400 - "'Note Taker' does not match '^[a-zA-Z0-9_-]{1,64}$' - 'messages.2.name'"

[kiranramanna]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.

Example Code

issue is in this cell : https://github.com/langchain-ai/langgraph/blame/e30d5f13bf6714fbfd67098f962af22f5f4a7b73/examples/multi_agent/hierarchical_agent_teams.ipynb#L662
I tried referring documentation : https://python.langchain.com/docs/langgraph#define-the-nodes

Error Message and Stack Trace (if applicable)

BadRequestError: Error code: 400 - {'error': {'message': "'Note Taker' does not match '^[a-zA-Z0-9_-]{1,64}$' - 'messages.2.name'", 'type': 'invalid_request_error', 'param': None, 'code': None}}

Description

I am trying to run this notebook.

System Info

System Information

OS: Darwin
OS Version: Darwin Kernel Version 23.4.0: Wed Feb 21 21:44:43 PST 2024; root:xnu-10063.101.15~2/RELEASE_ARM64_T6000
Python Version: 3.11.8 (main, Feb 26 2024, 15:36:12) [Clang 14.0.6 ]

Package Information

langchain_core: 0.1.39
langchain: 0.1.14
langchain_community: 0.0.31
langsmith: 0.1.38
langchain_experimental: 0.0.56
langchain_openai: 0.1.1
langchain_text_splitters: 0.0.1
langgraph: 0.0.31

Packages not installed (Not Necessarily a Problem)

The following packages were not found:

langserve

[dhanashri3107]

Removing the space in Note Taker should work. For ex: Note_Taker

[hinthornw]

This is now fixed