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[GH-ISSUE #20087] issue: Audio transcript broken at 0.6.42 #34609

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opened 2026-04-25 08:40:28 -05:00 by GiteaMirror · 6 comments
GiteaMirror commented 2026-04-25 08:40:28 -05:00
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Originally created by @zilingzhang on GitHub (Dec 22, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/20087

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

Docker

Open WebUI Version

v0.6.42

Ollama Version (if applicable)

No response

Operating System

ubuntu 24.04

Browser (if applicable)

Chrome 143

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

ASR works correctly.

Actual Behavior

Open webui throws a "Oops! It seems like the file format you're trying to upload is not supported. Please upload a file with a supported format and try again."

Steps to Reproduce

  1. Run 0.6.42 ghcr.io/open-webui/open-webui:cuda
  2. Start audio in chat
  3. Received format error

Logs & Screenshots

2025-12-22 01:18:02.545 | ERROR | open_webui.utils.misc:strict_match_mime_type:637 - Failed to match mime type audio/wav: list
index out of range - {"trace_id": "c016792302aae3dcd1280b95bf3df0e1", "span_id": "ee98aa5b31424c78"}
Traceback (most recent call last):

  File "/usr/local/lib/python3.11/threading.py", line 1002, in _bootstrap
    self._bootstrap_inner()
    │    └ <function Thread._bootstrap_inner at 0xec9a751049a0>
    └ <WorkerThread(AnyIO worker thread, started 260122144141728)>
  File "/usr/local/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
    │    └ <function WorkerThread.run at 0xec94a41dd940>
    └ <WorkerThread(AnyIO worker thread, started 260122144141728)>
  File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 986, in run
    result = context.run(func, *args)
             │       │   │      └ ()
             │       │   └ functools.partial(<function transcription at 0xec96cd177e20>, 
user=UserModel(id='48a50a0a-d095-48cf-b084-26a710fa0e21', email...
             │       └ <method 'run' of '_contextvars.Context' objects>
             └ <_contextvars.Context object at 0xec94a413bec0>

  File "/app/backend/open_webui/routers/audio.py", line 1159, in transcription
    if not strict_match_mime_type(stt_supported_content_types, file.content_type):
           │                      │                            │    └ <property object at 0xec9a70897650>
           │                      │                            └ UploadFile(filename='recording.wav', size=44732, 
headers=Headers({'content-disposition': 'form-data; name="file"; filename="r...
           │                      └ ['']
           └ <function strict_match_mime_type at 0xec98d86718a0>

> File "/app/backend/open_webui/utils/misc.py", line 625, in strict_match_mime_type
    match = mimeparse.best_match(supported, header)
            │         │          │          └ 'audio/wav'
            │         │          └ []
            │         └ <function best_match at 0xec98d86702c0>
            └ <module 'mimeparse' from '/usr/local/lib/python3.11/site-packages/mimeparse.py'>

  File "/usr/local/lib/python3.11/site-packages/mimeparse.py", line 215, in best_match
    return weighted_matches[-1][0][0] and weighted_matches[-1][2] or ''
           │                              └ []
           └ []

IndexError: list index out of range

Additional Information

No response

Originally created by @zilingzhang on GitHub (Dec 22, 2025). Original GitHub issue: https://github.com/open-webui/open-webui/issues/20087 ### 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 Docker ### Open WebUI Version v0.6.42 ### Ollama Version (if applicable) _No response_ ### Operating System ubuntu 24.04 ### Browser (if applicable) Chrome 143 ### 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 ASR works correctly. ### Actual Behavior Open webui throws a "Oops! It seems like the file format you're trying to upload is not supported. Please upload a file with a supported format and try again." ### Steps to Reproduce 1. Run 0.6.42 ghcr.io/open-webui/open-webui:cuda 2. Start audio in chat 3. Received format error ### Logs & Screenshots 2025-12-22 01:18:02.545 | ERROR | open_webui.utils.misc:strict_match_mime_type:637 - Failed to match mime type audio/wav: list index out of range - {"trace_id": "c016792302aae3dcd1280b95bf3df0e1", "span_id": "ee98aa5b31424c78"} Traceback (most recent call last): ``` File "/usr/local/lib/python3.11/threading.py", line 1002, in _bootstrap self._bootstrap_inner() │ └ <function Thread._bootstrap_inner at 0xec9a751049a0> └ <WorkerThread(AnyIO worker thread, started 260122144141728)> File "/usr/local/lib/python3.11/threading.py", line 1045, in _bootstrap_inner self.run() │ └ <function WorkerThread.run at 0xec94a41dd940> └ <WorkerThread(AnyIO worker thread, started 260122144141728)> File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 986, in run result = context.run(func, *args) │ │ │ └ () │ │ └ functools.partial(<function transcription at 0xec96cd177e20>, user=UserModel(id='48a50a0a-d095-48cf-b084-26a710fa0e21', email... │ └ <method 'run' of '_contextvars.Context' objects> └ <_contextvars.Context object at 0xec94a413bec0> File "/app/backend/open_webui/routers/audio.py", line 1159, in transcription if not strict_match_mime_type(stt_supported_content_types, file.content_type): │ │ │ └ <property object at 0xec9a70897650> │ │ └ UploadFile(filename='recording.wav', size=44732, headers=Headers({'content-disposition': 'form-data; name="file"; filename="r... │ └ [''] └ <function strict_match_mime_type at 0xec98d86718a0> > File "/app/backend/open_webui/utils/misc.py", line 625, in strict_match_mime_type match = mimeparse.best_match(supported, header) │ │ │ └ 'audio/wav' │ │ └ [] │ └ <function best_match at 0xec98d86702c0> └ <module 'mimeparse' from '/usr/local/lib/python3.11/site-packages/mimeparse.py'> File "/usr/local/lib/python3.11/site-packages/mimeparse.py", line 215, in best_match return weighted_matches[-1][0][0] and weighted_matches[-1][2] or '' │ └ [] └ [] IndexError: list index out of range ``` ### Additional Information _No response_
GiteaMirror added the bug label 2026-04-25 08:40:28 -05:00
GiteaMirror commented 2026-04-25 08:40:32 -05:00
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@owui-terminator[bot] commented on GitHub (Dec 22, 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. #20019 issue:
    by j63440490 • Dec 17, 2025 • bug

  2. #19864 issue:
    by Haervwe • Dec 10, 2025 • bug

  3. #19777 issue:
    by Yaute7 • Dec 05, 2025 • bug

  4. #19877 issue:
    by dotmobo • Dec 11, 2025 • bug

  5. #19861 issue:
    by QuitHub • Dec 10, 2025 • bug

Show 5 more related issues

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

  2. #19563 issue:
    by naruto7g • Nov 28, 2025 • bug

  3. #19211 issue:
    by Byrnes9 • Nov 16, 2025 • bug

  4. #19496 issue: 500 internal server error appears in v0.6.40
    by cloudtuotuo • Nov 26, 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:3679917297 --> @owui-terminator[bot] commented on GitHub (Dec 22, 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. [#20019](https://github.com/open-webui/open-webui/issues/20019) **issue:** *by j63440490 • Dec 17, 2025 • `bug`* 2. [#19864](https://github.com/open-webui/open-webui/issues/19864) **issue:** *by Haervwe • Dec 10, 2025 • `bug`* 3. [#19777](https://github.com/open-webui/open-webui/issues/19777) **issue:** *by Yaute7 • Dec 05, 2025 • `bug`* 4. [#19877](https://github.com/open-webui/open-webui/issues/19877) **issue:** *by dotmobo • Dec 11, 2025 • `bug`* 5. [#19861](https://github.com/open-webui/open-webui/issues/19861) **issue:** *by QuitHub • Dec 10, 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. [#19563](https://github.com/open-webui/open-webui/issues/19563) **issue:** *by naruto7g • Nov 28, 2025 • `bug`* 8. [#19211](https://github.com/open-webui/open-webui/issues/19211) **issue:** *by Byrnes9 • Nov 16, 2025 • `bug`* 9. [#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`* 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 2026-04-25 08:40:32 -05:00
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@spammenotinoz commented on GitHub (Dec 22, 2025):

Same, bug introduced in 0.6.42
2025-12-22 12:50:39.727 | ERROR | open_webui.utils.misc:strict_match_mime_type:637 - Failed to match mime type audio/wav: list index out of range

There is a workaround,
In Admin Settings, set Supported MIME Types = audio/wav
Appears the defaults have been lost.

<!-- gh-comment-id:3679971390 --> @spammenotinoz commented on GitHub (Dec 22, 2025): Same, bug introduced in 0.6.42 2025-12-22 12:50:39.727 | ERROR | open_webui.utils.misc:strict_match_mime_type:637 - Failed to match mime type audio/wav: list index out of range There is a workaround, In Admin Settings, set Supported MIME Types = audio/wav Appears the defaults have been lost.
GiteaMirror commented 2026-04-25 08:40:32 -05:00
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@spammenotinoz commented on GitHub (Dec 22, 2025):

Unsure what the defaults were but these also fix the issue, while covering more audio types.

audio/*

or

audio/mpeg, audio/wav, audio/ogg, audio/x-m4a

<!-- gh-comment-id:3679997448 --> @spammenotinoz commented on GitHub (Dec 22, 2025): Unsure what the defaults were but these also fix the issue, while covering more audio types. audio/* or audio/mpeg, audio/wav, audio/ogg, audio/x-m4a
GiteaMirror commented 2026-04-25 08:40:33 -05:00
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@i-iooi-i commented on GitHub (Dec 22, 2025):

Had the same problem

<!-- gh-comment-id:3680016206 --> @i-iooi-i commented on GitHub (Dec 22, 2025): Had the same problem
GiteaMirror commented 2026-04-25 08:40:35 -05:00
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@firestrife23 commented on GitHub (Dec 22, 2025):

Following, having same issues as above.

<!-- gh-comment-id:3683157057 --> @firestrife23 commented on GitHub (Dec 22, 2025): Following, having same issues as above.
GiteaMirror commented 2026-04-25 08:40:36 -05:00
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@ALIENvsROBOT commented on GitHub (Dec 22, 2025):

@tjbck could you please fix it. The latest version has the same issue !

<!-- gh-comment-id:3683865120 --> @ALIENvsROBOT commented on GitHub (Dec 22, 2025): @tjbck could you please fix it. The latest version has the same issue !
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