[Bug]: user_header_mappings does not work with OpenWebUI

[cybergexl]

What happened?

Hello,
I am desperately trying to retrieve the x-openwebui-user-email and x-openwebui-user-id as indicated in the documentation here: https://docs.litellm.ai/docs/tutorials/openweb_ui#32-tracking-usage--spend

I thought it was OpenWebUI that wasn't passing the values, but in fact it is, since we can see them in the extra tags.

Here is my config.yaml file

litellm_settings:
  extra_spend_tag_headers:
    - “x-openwebui-user-id”
    - “x-openwebui-user-email”
    - “x-openwebui-user-role”

general_settings:
  user_header_mappings:
    - header_name: x-openwebui-user-id
      litellm_user_role: internal_user
    - header_name: x-openwebui-user-email
      litellm_user_role: customer

I think there is a bug since I configured it as described in the documentation.

Quick question: does the user have to exist in LiteLLM's internal users for the mapping to work?

Thank you

Relevant log output

lite-llm             | 08:40:16 - LiteLLM Proxy:DEBUG: proxy_server.py:2893 - param_name=general_settings, param_value={'user_header_mappings': [{'header_name': 'x-openwebui-user-id', 'litellm_user_role': 'internal_user'}, {'header_name': 'x-openwebui-user-email', 'litellm_user_role': 'customer'}, {'header_name': 'x-openwebui-user-email', 'litellm_user_role': 'admin'}]}

Are you a ML Ops Team?

No

What LiteLLM version are you on ?

ghcr.io/berriai/litellm:main-stable (up to date)

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