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[GH-ISSUE #16482] issue: s3vector ModuleNotFoundError: No module named 'backend' #56589

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opened 2026-05-05 19:45:08 -05:00 by GiteaMirror · 1 comment
GiteaMirror commented 2026-05-05 19:45:08 -05:00
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Originally created by @jsweetzer-ea on GitHub (Aug 11, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/16482

Check Existing Issues

  • I have searched the existing issues and discussions.
  • I am using the latest version of Open WebUI.

Installation Method

Docker

Open WebUI Version

0.6..21

Ollama Version (if applicable)

No response

Operating System

AWS Linux

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

Set s3vector as VECTOR_DB to use s3 vectors and it should work

Actual Behavior

Build fails:

s3vector.py imports stringify_metadata via backend.open_webui.retrieval.vector.utils, but backend isn’t a Python package, so the import fails at runtime with ModuleNotFoundError.

Steps to Reproduce

Set s3vector and associated env vars, run the container

Logs & Screenshots

Image

Additional Information

No response

Originally created by @jsweetzer-ea on GitHub (Aug 11, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/16482 ### Check Existing Issues - [x] I have searched the existing issues and discussions. - [x] I am using the latest version of Open WebUI. ### Installation Method Docker ### Open WebUI Version 0.6..21 ### Ollama Version (if applicable) _No response_ ### Operating System AWS Linux ### 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 Set s3vector as VECTOR_DB to use s3 vectors and it should work ### Actual Behavior Build fails: s3vector.py imports stringify_metadata via backend.open_webui.retrieval.vector.utils, but backend isn’t a Python package, so the import fails at runtime with ModuleNotFoundError. ### Steps to Reproduce Set s3vector and associated env vars, run the container ### Logs & Screenshots <img width="1514" height="524" alt="Image" src="https://github.com/user-attachments/assets/3dfa9e30-9d46-4111-a305-b77719df286f" /> ### Additional Information _No response_
GiteaMirror added the bug label 2026-05-05 19:45:08 -05:00
GiteaMirror commented 2026-05-05 19:45:11 -05:00
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@tjbck commented on GitHub (Aug 11, 2025):

Addressed in dev, 0.6.22 will be released shortly.

<!-- gh-comment-id:3174538654 --> @tjbck commented on GitHub (Aug 11, 2025): Addressed in dev, 0.6.22 will be released shortly.
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Reference: github-starred/open-webui#56589
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