# Lumen

**URL:** https://discourse.holoviz.org/c/lumen/14.md

[Latest](https://discourse.holoviz.org/latest.md) · [Categories](https://discourse.holoviz.org/categories.md) · [Tags](https://discourse.holoviz.org/tags.md)

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## [About the Lumen category](https://discourse.holoviz.org/t/about-the-lumen-category/1809)

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**Author:** [@philippjfr](https://discourse.holoviz.org/u/philippjfr)\
**Replies:** 0

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## [Interested in GSoC — currently on #2004 (routing layer)](https://discourse.holoviz.org/t/interested-in-gsoc-currently-on-2004-routing-layer/10054)

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**Author:** [@Vamshi1404](https://discourse.holoviz.org/u/Vamshi1404)\
**Replies:** 1\
**Last updated:** [September 14, 2026, 8:02pm UTC](https://discourse.holoviz.org/t/interested-in-gsoc-currently-on-2004-routing-layer/10054 "2026-09-14T20:02:07Z")

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Hi all — interested in GSoC down the line, and currently working through #2004 (routing layer for llm.py). Traced through the model\_kwargs/invoke flow and proposed an approach in the issue — now waiting on maintainer in…

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## [GSoC 2026: Interest in Lumen + Xarray Integration – Harshith](https://discourse.holoviz.org/t/gsoc-2026-interest-in-lumen-xarray-integration-harshith/9111)

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**Author:** [@Abslock128](https://discourse.holoviz.org/u/Abslock128)\
**Replies:** 2\
**Last updated:** [March 20, 2026, 5:43am UTC](https://discourse.holoviz.org/t/gsoc-2026-interest-in-lumen-xarray-integration-harshith/9111 "2026-03-20T05:43:08Z")

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hey everyone i’m Harshith, i am currently pursuing my Undergrad in Computer science specializing in Data Science and i’m looking to apply for GSoC 2026 with HoloViz, specifically the Lumen + Xarray integration project. s…

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## [LumenAI with Ollama](https://discourse.holoviz.org/t/lumenai-with-ollama/9082)

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**Author:** [@rh1](https://discourse.holoviz.org/u/rh1)\
**Replies:** 18\
**Last updated:** [February 11, 2026, 2:27pm UTC](https://discourse.holoviz.org/t/lumenai-with-ollama/9082 "2026-02-11T14:27:50Z")

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Dear All, I just try LumenAi and since I used ollama locally i try to follow the documentation (https://lumen.holoviz.org/installation/#locally-hosted) previously my ollama have been installed and work well with ope…

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## [Lumen Ai connection to mongoDB](https://discourse.holoviz.org/t/lumen-ai-connection-to-mongodb/9081)

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**Author:** [@rh1](https://discourse.holoviz.org/u/rh1)\
**Replies:** 4\
**Last updated:** [January 31, 2026, 11:01am UTC](https://discourse.holoviz.org/t/lumen-ai-connection-to-mongodb/9081 "2026-01-31T11:01:02Z")

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Dear All, Is it possible lumen AI connect with non relation database like mongoDB. If currently not yet support how the workaround lumen AI interact with that. Thanks

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## [Lumen with Ollama as LLM provider](https://discourse.holoviz.org/t/lumen-with-ollama-as-llm-provider/8872)

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**Author:** [@RoKor](https://discourse.holoviz.org/u/RoKor)\
**Replies:** 3\
**Last updated:** [July 28, 2025, 8:03pm UTC](https://discourse.holoviz.org/t/lumen-with-ollama-as-llm-provider/8872 "2025-07-28T20:03:29Z")

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Dear Lumenists, I am new to Lumen, however, I like what I see. However, I am struggling with the idea to use Ollama (should have an OpenAI-compatible interface) as the LLM provider. lumen-ai serve --provider openai alwa…

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## [Panel: Add a logo to config / understanding the Reference](https://discourse.holoviz.org/t/panel-add-a-logo-to-config-understanding-the-reference/5567)

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**Author:** [@turbotimon](https://discourse.holoviz.org/u/turbotimon)\
**Replies:** 1\
**Last updated:** [May 10, 2024, 3:53pm UTC](https://discourse.holoviz.org/t/panel-add-a-logo-to-config-understanding-the-reference/5567 "2024-05-10T15:53:56Z")

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How can i add a logo? Logo is in the root directory (where the yaml is) Tried different path formats like “logo\_horizontal.png” “./logo\_horizontal.png” ““file://C:\\projects\\lumen\\logo\_horizontal.png”” How my config lo…

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## [In Lumen Builder, how complete is the mapping between Lumen and Panel objects? Is there a list / documentation of this?](https://discourse.holoviz.org/t/in-lumen-builder-how-complete-is-the-mapping-between-lumen-and-panel-objects-is-there-a-list-documentation-of-this/7149)

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**Author:** [@coderambling](https://discourse.holoviz.org/u/coderambling)\
**Replies:** 0\
**Last updated:** [April 22, 2024, 8:37pm UTC](https://discourse.holoviz.org/t/in-lumen-builder-how-complete-is-the-mapping-between-lumen-and-panel-objects-is-there-a-list-documentation-of-this/7149 "2024-04-22T20:37:20Z")

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In Lumen Builder, how complete is the mapping between Lumen and Panel objects? Is there a list / documentation of this? Is the mapping updated as Panel versions change? In the Lumen Builder GUI, are all of the componen…

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## [Error (unexpected keyword argument 'arg') trying "Palmer Penguins" example](https://discourse.holoviz.org/t/error-unexpected-keyword-argument-arg-trying-palmer-penguins-example/5674)

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**Author:** [@DanCodigaRT](https://discourse.holoviz.org/u/DanCodigaRT)\
**Replies:** 3\
**Last updated:** [July 12, 2023, 12:10pm UTC](https://discourse.holoviz.org/t/error-unexpected-keyword-argument-arg-trying-palmer-penguins-example/5674 "2023-07-12T12:10:05Z")

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I tried the basic Palmer Penguins example and on running lumen the first time (command “lumen serve penguins.yaml --show --autoreload”) I got this error: ERROR: \_\_init\_\_() got an unexpected keyword argument 'arg' Hope…

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## [Run a Lumen Dashboard](https://discourse.holoviz.org/t/run-a-lumen-dashboard/5225)

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**Author:** [@CongTang](https://discourse.holoviz.org/u/CongTang)\
**Replies:** 10\
**Last updated:** [May 19, 2023, 2:02pm UTC](https://discourse.holoviz.org/t/run-a-lumen-dashboard/5225 "2023-05-19T14:02:49Z")

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Hi I am trying Lumen Dashboard, and i am running a example from Build a dashboard — Lumen 0.14.2 documentation But it end up with: ERROR: Error loading penguins.yaml: Invalid syntax in 'penguins.yaml' on line 1: sour…

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## [Lumen Releases/Release cadence](https://discourse.holoviz.org/t/lumen-releases-release-cadence/4062)

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**Author:** [@Lnk2past](https://discourse.holoviz.org/u/Lnk2past)\
**Replies:** 2\
**Last updated:** [August 5, 2022, 4:38pm UTC](https://discourse.holoviz.org/t/lumen-releases-release-cadence/4062 "2022-08-05T16:38:28Z")

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Hi there, Just came across Lumen and it seems like a really great tool, thank you for developing it! I see that while development seems active, there has not been an official release since April 2021. Are there plans of…

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## [Test Heroku Deployment of Example Lumen dashboard](https://discourse.holoviz.org/t/test-heroku-deployment-of-example-lumen-dashboard/3406)

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**Author:** [@elipinkus](https://discourse.holoviz.org/u/elipinkus)\
**Replies:** 0\
**Last updated:** [February 22, 2022, 2:33am UTC](https://discourse.holoviz.org/t/test-heroku-deployment-of-example-lumen-dashboard/3406 "2022-02-22T02:33:20Z")

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I have followed the panel docs and arrived at the following attempt to deploy a test app to Heroku using one of the existing lumen examples that works locally: GitHub - EliPinkus/lumen-test: attempting to deploy a lumen …

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## [Streaming data](https://discourse.holoviz.org/t/streaming-data/2281)

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**Author:** [@capihacendado](https://discourse.holoviz.org/u/capihacendado)\
**Replies:** 0\
**Last updated:** [May 12, 2021, 9:05am UTC](https://discourse.holoviz.org/t/streaming-data/2281 "2021-05-12T09:05:47Z")

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Hello I would like to know how it is possible to use lumen to plot stream data without the need to hit the refresh button. If it is not possible yet, could you confirm me if it is in the road map? Thank you very much

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## [Guidance to get JSONSource throught https redirect](https://discourse.holoviz.org/t/guidance-to-get-jsonsource-throught-https-redirect/2003)

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**Author:** [@yogis](https://discourse.holoviz.org/u/yogis)\
**Replies:** 3\
**Last updated:** [March 22, 2021, 5:27am UTC](https://discourse.holoviz.org/t/guidance-to-get-jsonsource-throught-https-redirect/2003 "2021-03-22T05:27:20Z")

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I need to get json data by Https but all the services are behind a SSO (called JOSSO). So when I use json type, Lumen can’t create the dataframe because it get a 302 redirect temp code. I am not sure how to resolve th…

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## [How can I start Lumen](https://discourse.holoviz.org/t/how-can-i-start-lumen/1998)

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**Author:** [@capihacendado](https://discourse.holoviz.org/u/capihacendado)\
**Replies:** 2\
**Last updated:** [March 18, 2021, 7:55am UTC](https://discourse.holoviz.org/t/how-can-i-start-lumen/1998 "2021-03-18T07:55:23Z")

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Hello, This is my first post in the forum. I hear about Lumen and I would like to give it a try and set it up locally but after reading the documentation I have not idea of how can I run it in order to test it. how can…