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[GH-ISSUE #18373] issue: Gemini Nano Banana added through OpenRouter causes Chunk too Big error #57241

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opened 2026-05-05 20:46:37 -05:00 by GiteaMirror · 2 comments
GiteaMirror commented 2026-05-05 20:46:37 -05:00
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Originally created by @mike-rep on GitHub (Oct 16, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/18373

Check Existing Issues

  • I have searched for any existing and/or related issues.
  • I have searched for any existing and/or related discussions.
  • I am using the latest version of Open WebUI.

Installation Method

Docker

Open WebUI Version

0.6.34

Ollama Version (if applicable)

No response

Operating System

Windows 11

Browser (if applicable)

No response

Confirmation

  • I have read and followed all instructions in README.md.
  • I am using the latest version of both Open WebUI and Ollama.
  • I have included the browser console logs.
  • I have included the Docker container logs.
  • I have provided every relevant configuration, setting, and environment variable used in my setup.
  • I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
  • I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
  • Start with the initial platform/version/OS and dependencies used,
  • Specify exact install/launch/configure commands,
  • List URLs visited, user input (incl. example values/emails/passwords if needed),
  • Describe all options and toggles enabled or changed,
  • Include any files or environmental changes,
  • Identify the expected and actual result at each stage,
  • Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

When talking to the model Gemini 2.5 Flash Image, we expect to return an image from the conversation.

Actual Behavior

When you interact with Gemini 2.5 Flash Image you receive a Chunk too big error instead of receiving the image generated in the chat.

Steps to Reproduce

  1. Add Gemini 2.5 Flash Image to your available Models through OpenRouter
  2. Attempt to generate an image using this model.
  3. Receive a Chunk too Big error

Logs & Screenshots

Image

Additional Information

No response

Originally created by @mike-rep on GitHub (Oct 16, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/18373 ### Check Existing Issues - [x] I have searched for any existing and/or related issues. - [x] I have searched for any existing and/or related discussions. - [x] I am using the latest version of Open WebUI. ### Installation Method Docker ### Open WebUI Version 0.6.34 ### Ollama Version (if applicable) _No response_ ### Operating System Windows 11 ### Browser (if applicable) _No response_ ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** Open WebUI and Ollama. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.** - [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc). - [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps: - Start with the initial platform/version/OS and dependencies used, - Specify exact install/launch/configure commands, - List URLs visited, user input (incl. example values/emails/passwords if needed), - Describe all options and toggles enabled or changed, - Include any files or environmental changes, - Identify the expected and actual result at each stage, - Ensure any reasonably skilled user can follow and hit the same issue. ### Expected Behavior When talking to the model Gemini 2.5 Flash Image, we expect to return an image from the conversation. ### Actual Behavior When you interact with Gemini 2.5 Flash Image you receive a Chunk too big error instead of receiving the image generated in the chat. ### Steps to Reproduce 1. Add Gemini 2.5 Flash Image to your available Models through OpenRouter 2. Attempt to generate an image using this model. 3. Receive a Chunk too Big error ### Logs & Screenshots <img width="570" height="233" alt="Image" src="https://github.com/user-attachments/assets/3eb337f8-d666-47b9-bbd1-4f132b7f9093" /> ### Additional Information _No response_
GiteaMirror added the bug label 2026-05-05 20:46:37 -05:00
GiteaMirror commented 2026-05-05 20:46:38 -05:00
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@Classic298 commented on GitHub (Oct 16, 2025):

Duplicate

https://github.com/open-webui/open-webui/discussions/17003

https://github.com/open-webui/open-webui/discussions/17078

<!-- gh-comment-id:3412556569 --> @Classic298 commented on GitHub (Oct 16, 2025): Duplicate https://github.com/open-webui/open-webui/discussions/17003 https://github.com/open-webui/open-webui/discussions/17078
GiteaMirror commented 2026-05-05 20:46:38 -05:00
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@Classic298 commented on GitHub (Oct 17, 2025):

https://github.com/open-webui/open-webui/issues/17626

<!-- gh-comment-id:3414316470 --> @Classic298 commented on GitHub (Oct 17, 2025): https://github.com/open-webui/open-webui/issues/17626
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Reference: github-starred/open-webui#57241
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