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[GH-ISSUE #19709] issue: Errors building with last langchain libs>v1.0.0 #18962

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opened 2026-04-20 01:14:58 -05:00 by GiteaMirror · 5 comments
GiteaMirror commented 2026-04-20 01:14:58 -05:00
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Originally created by @rgaricano on GitHub (Dec 3, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/19709

Check Existing Issues

  • I have searched for any existing and/or related issues.
  • I have searched for any existing and/or related discussions.
  • I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!).
  • I am using the latest version of Open WebUI.

Installation Method

Git Clone

Open WebUI Version

v0.6.41

Ollama Version (if applicable)

v0.13.1

Operating System

ubuntu 24.04

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

No errors when startup

Actual Behavior

Stop on launching

Steps to Reproduce

Clone, and build

Logs & Screenshots

Dec 03 10:59:37 ricardo-PC startssh.sh[489729]:   File "/export/IAI/open-webui/backend/open_webui/routers/retrieval.py", line 31, in <module>
Dec 03 10:59:37 ricardo-PC startssh.sh[489729]:     from langchain.text_splitter import RecursiveCharacterTextSplitter, TokenTextSplitter
Dec 03 10:59:37 ricardo-PC startssh.sh[489729]: ModuleNotFoundError: No module named 'langchain.text_splitter'
Dec 03 10:59:41 ricardo-PC systemd[1]: 0-openwebui.service: Main process exited, code=exited, status=1/FAILURE

Dec 03 11:21:57 ricardo-PC startssh.sh[495883]:   File "/export/IAI/open-webui/backend/open_webui/retrieval/utils.py", line 15, in <module>
Dec 03 11:21:57 ricardo-PC startssh.sh[495883]:     from langchain.retrievers import ContextualCompressionRetriever, EnsembleRetriever
Dec 03 11:21:57 ricardo-PC startssh.sh[495883]: ModuleNotFoundError: No module named 'langchain.retrievers'
Dec 03 11:22:01 ricardo-PC systemd[1]: 0-openwebui.service: Main process exited, code=exited, status=1/FAILURE

Additional Information

Solved editing routers/retrieval.py & retrieval/utils.py

PR: https://github.com/open-webui/open-webui/pull/19710

Originally created by @rgaricano on GitHub (Dec 3, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/19709 ### 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 have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!). - [x] I am using the latest version of Open WebUI. ### Installation Method Git Clone ### Open WebUI Version v0.6.41 ### Ollama Version (if applicable) v0.13.1 ### Operating System ubuntu 24.04 ### 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 No errors when startup ### Actual Behavior Stop on launching ### Steps to Reproduce Clone, and build ### Logs & Screenshots ``` Dec 03 10:59:37 ricardo-PC startssh.sh[489729]: File "/export/IAI/open-webui/backend/open_webui/routers/retrieval.py", line 31, in <module> Dec 03 10:59:37 ricardo-PC startssh.sh[489729]: from langchain.text_splitter import RecursiveCharacterTextSplitter, TokenTextSplitter Dec 03 10:59:37 ricardo-PC startssh.sh[489729]: ModuleNotFoundError: No module named 'langchain.text_splitter' Dec 03 10:59:41 ricardo-PC systemd[1]: 0-openwebui.service: Main process exited, code=exited, status=1/FAILURE ``` ``` Dec 03 11:21:57 ricardo-PC startssh.sh[495883]: File "/export/IAI/open-webui/backend/open_webui/retrieval/utils.py", line 15, in <module> Dec 03 11:21:57 ricardo-PC startssh.sh[495883]: from langchain.retrievers import ContextualCompressionRetriever, EnsembleRetriever Dec 03 11:21:57 ricardo-PC startssh.sh[495883]: ModuleNotFoundError: No module named 'langchain.retrievers' Dec 03 11:22:01 ricardo-PC systemd[1]: 0-openwebui.service: Main process exited, code=exited, status=1/FAILURE ``` ### Additional Information Solved editing routers/retrieval.py & retrieval/utils.py PR: https://github.com/open-webui/open-webui/pull/19710
GiteaMirror added the bug label 2026-04-20 01:14:58 -05:00
GiteaMirror commented 2026-04-20 01:14:59 -05:00
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@owui-terminator[bot] commented on GitHub (Dec 3, 2025):

🔍 Similar Issues Found

I found some existing issues that might be related to this one. Please check if any of these are duplicates or contain helpful solutions:

  1. #19563 issue:
    by naruto7g • Nov 28, 2025 • bug

  2. #19211 issue:
    by Byrnes9 • Nov 16, 2025 • bug

  3. #14440 issue:
    by ehsan8203 • May 28, 2025 • bug

  4. #15917 issue: can"t build v0.6.18
    by sanchitbhavsar • Jul 21, 2025 • bug

  5. #19496 issue: 500 internal server error appears in v0.6.40
    by cloudtuotuo • Nov 26, 2025 • bug

Show 5 more related issues

  1. #19417 issue: v0.6.37 SQL Error
    by AKHYP • Nov 24, 2025 • bug

  2. #15928 issue: Problematic installation
    by PatrickAtYacoub • Jul 22, 2025 • bug

  3. #19438 issue: Icon loading regression
    by JoelShepard • Nov 24, 2025 • bug

  4. #18975 issue: 500: Internal Error
    by nurb2kea • Nov 06, 2025 • bug

  5. #18145 issue: 0.6.33 regression
    by Ark-Levy • Oct 08, 2025 • bug

💡 Tips:

  • If this is a duplicate, please consider closing this issue and adding any additional details to the existing one
  • If you found a solution in any of these issues, please share it here to help others

This comment was generated automatically by a bot. Please react with a 👍 if this comment was helpful, or a 👎 if it was not.

<!-- gh-comment-id:3606298331 --> @owui-terminator[bot] commented on GitHub (Dec 3, 2025): 🔍 **Similar Issues Found** I found some existing issues that might be related to this one. Please check if any of these are duplicates or contain helpful solutions: 1. [#19563](https://github.com/open-webui/open-webui/issues/19563) **issue:** *by naruto7g • Nov 28, 2025 • `bug`* 2. [#19211](https://github.com/open-webui/open-webui/issues/19211) **issue:** *by Byrnes9 • Nov 16, 2025 • `bug`* 3. [#14440](https://github.com/open-webui/open-webui/issues/14440) **issue:** *by ehsan8203 • May 28, 2025 • `bug`* 4. [#15917](https://github.com/open-webui/open-webui/issues/15917) **issue: can"t build v0.6.18** *by sanchitbhavsar • Jul 21, 2025 • `bug`* 5. [#19496](https://github.com/open-webui/open-webui/issues/19496) **issue: 500 internal server error appears in v0.6.40** *by cloudtuotuo • Nov 26, 2025 • `bug`* <details> <summary>Show 5 more related issues</summary> 6. [#19417](https://github.com/open-webui/open-webui/issues/19417) **issue: v0.6.37 SQL Error** *by AKHYP • Nov 24, 2025 • `bug`* 7. [#15928](https://github.com/open-webui/open-webui/issues/15928) **issue: Problematic installation** *by PatrickAtYacoub • Jul 22, 2025 • `bug`* 8. [#19438](https://github.com/open-webui/open-webui/issues/19438) **issue: Icon loading regression** *by JoelShepard • Nov 24, 2025 • `bug`* 9. [#18975](https://github.com/open-webui/open-webui/issues/18975) **issue: 500: Internal Error** *by nurb2kea • Nov 06, 2025 • `bug`* 10. [#18145](https://github.com/open-webui/open-webui/issues/18145) **issue: 0.6.33 regression** *by Ark-Levy • Oct 08, 2025 • `bug`* </details> --- 💡 **Tips:** - If this is a duplicate, please consider closing this issue and adding any additional details to the existing one - If you found a solution in any of these issues, please share it here to help others *This comment was generated automatically by a bot.* Please react with a 👍 if this comment was helpful, or a 👎 if it was not.
GiteaMirror commented 2026-04-20 01:15:00 -05:00
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@athoik commented on GitHub (Dec 3, 2025):

I have a ready PR !

I was waiting for langchain community to release a new version that includes a PR that will make OI fully supported on Debian 13 and Python 3.13.

https://github.com/langchain-ai/langchain-community/pull/375

Once https://github.com/langchain-ai/langchain-community/tags 0.4.2 released I can push the PR.
I can push now, but it will not be 100% python 3.13 ready.

diff --git a/backend/open_webui/retrieval/utils.py b/backend/open_webui/retrieval/utils.py
index da570330b..272b749ee 100644
--- a/backend/open_webui/retrieval/utils.py
+++ b/backend/open_webui/retrieval/utils.py
@@ -10,7 +10,8 @@ import re

 from urllib.parse import quote
 from huggingface_hub import snapshot_download
-from langchain.retrievers import ContextualCompressionRetriever, EnsembleRetriever
+from langchain_classic.retrievers.contextual_compression import ContextualCompressionRetriever
+from langchain_classic.retrievers.ensemble import EnsembleRetriever
 from langchain_community.retrievers import BM25Retriever
 from langchain_core.documents import Document

diff --git a/backend/open_webui/routers/retrieval.py b/backend/open_webui/routers/retrieval.py
index f8147372f..2954c6135 100644
--- a/backend/open_webui/routers/retrieval.py
+++ b/backend/open_webui/routers/retrieval.py
@@ -28,7 +28,7 @@ from pydantic import BaseModel
 import tiktoken


-from langchain.text_splitter import RecursiveCharacterTextSplitter, TokenTextSplitter
+from langchain_text_splitters import RecursiveCharacterTextSplitter, TokenTextSplitter
 from langchain_text_splitters import MarkdownHeaderTextSplitter
 from langchain_core.documents import Document

diff --git a/backend/requirements.txt b/backend/requirements.txt
index 0fdcb618f..43b693e2d 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -44,8 +44,10 @@ anthropic
 google-genai==1.38.0
 google-generativeai==0.8.5

-langchain==0.3.27
-langchain-community==0.3.29
+langchain==1.0.5
+langchain-classic==1.0.0
+langchain-community==0.4.1
+langchain-text-splitters==1.0.0

 fake-useragent==2.2.0
 chromadb==1.1.0
<!-- gh-comment-id:3608218990 --> @athoik commented on GitHub (Dec 3, 2025): I have a ready PR ! I was waiting for langchain community to release a new version that includes a PR that will make OI fully supported on Debian 13 and Python 3.13. https://github.com/langchain-ai/langchain-community/pull/375 Once https://github.com/langchain-ai/langchain-community/tags 0.4.2 released I can push the PR. I can push now, but it will not be 100% python 3.13 ready. ``` diff --git a/backend/open_webui/retrieval/utils.py b/backend/open_webui/retrieval/utils.py index da570330b..272b749ee 100644 --- a/backend/open_webui/retrieval/utils.py +++ b/backend/open_webui/retrieval/utils.py @@ -10,7 +10,8 @@ import re from urllib.parse import quote from huggingface_hub import snapshot_download -from langchain.retrievers import ContextualCompressionRetriever, EnsembleRetriever +from langchain_classic.retrievers.contextual_compression import ContextualCompressionRetriever +from langchain_classic.retrievers.ensemble import EnsembleRetriever from langchain_community.retrievers import BM25Retriever from langchain_core.documents import Document diff --git a/backend/open_webui/routers/retrieval.py b/backend/open_webui/routers/retrieval.py index f8147372f..2954c6135 100644 --- a/backend/open_webui/routers/retrieval.py +++ b/backend/open_webui/routers/retrieval.py @@ -28,7 +28,7 @@ from pydantic import BaseModel import tiktoken -from langchain.text_splitter import RecursiveCharacterTextSplitter, TokenTextSplitter +from langchain_text_splitters import RecursiveCharacterTextSplitter, TokenTextSplitter from langchain_text_splitters import MarkdownHeaderTextSplitter from langchain_core.documents import Document diff --git a/backend/requirements.txt b/backend/requirements.txt index 0fdcb618f..43b693e2d 100644 --- a/backend/requirements.txt +++ b/backend/requirements.txt @@ -44,8 +44,10 @@ anthropic google-genai==1.38.0 google-generativeai==0.8.5 -langchain==0.3.27 -langchain-community==0.3.29 +langchain==1.0.5 +langchain-classic==1.0.0 +langchain-community==0.4.1 +langchain-text-splitters==1.0.0 fake-useragent==2.2.0 chromadb==1.1.0 ```
GiteaMirror commented 2026-04-20 01:15:00 -05:00
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@rgaricano commented on GitHub (Dec 3, 2025):

I did a PR but I closed because in requirements is used langchain 0.3.27 & usually this kind of changes isn't accepted.

<!-- gh-comment-id:3608881664 --> @rgaricano commented on GitHub (Dec 3, 2025): I did a PR but I closed because in requirements is used langchain 0.3.27 & usually this kind of changes isn't accepted.
GiteaMirror commented 2026-04-20 01:15:00 -05:00
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@Classic298 commented on GitHub (Dec 14, 2025):

any update here?

<!-- gh-comment-id:3652222780 --> @Classic298 commented on GitHub (Dec 14, 2025): any update here?
GiteaMirror commented 2026-04-20 01:15:01 -05:00
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@Classic298 commented on GitHub (Dec 20, 2025):

can this be closed?

<!-- gh-comment-id:3677948984 --> @Classic298 commented on GitHub (Dec 20, 2025): can this be closed?
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