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
Pip Install
Open WebUI Version
v0.8.8
Ollama Version (if applicable)
v0.17.4
Operating System
Ubuntu 24.04
Browser (if applicable)
Firefox
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
Uploading a yaml should treat is as a text-file and load it with a TextLoader
Actual Behavior
It forwards it to docling, which will fail.
Steps to Reproduce
Setup openwebui as you want
Use docling document engine and have docling serve running somewhere
Upload a yaml file
Logs & Screenshots
Mar 05 13:50:01 hostname uvx[473121]: ERROR:docling.datamodel.document:Input document open-webui-data/uploads/00657899-4740-4928-85dd-17ecfefd15d0_2JQS.yaml with format None does not match any allowed format: (dict_keys([<InputFormat.DOCX: 'docx'>, <InputFormat.PPTX: 'pptx'>, <InputFormat.HTML: 'html'>, <InputFormat.IMAGE: 'image'>, <InputFormat.PDF: 'pdf'>, <InputFormat.ASCIIDOC: 'asciidoc'>, <InputFormat.MD: 'md'>, <InputFormat.CSV: 'csv'>, <InputFormat.XLSX: 'xlsx'>, <InputFormat.XML_USPTO: 'xml_uspto'>, <InputFormat.XML_JATS: 'xml_jats'>, <InputFormat.XML_XBRL: 'xml_xbrl'>, <InputFormat.METS_GBS: 'mets_gbs'>, <InputFormat.JSON_DOCLING: 'json_docling'>, <InputFormat.AUDIO: 'audio'>, <InputFormat.VTT: 'vtt'>, <InputFormat.LATEX: 'latex'>]))
Mar 05 13:50:03 hostname uvx[473121]: INFO: other-host:0 - "POST /v1/convert/file HTTP/1.0" 200 OK
Additional Information
Hey :)
After deploying a test instance at my university, testers found out that uploading any yaml file throws the error in the screenshot
After reporting it to me, i was able to easly reproduce it: Open-WebUI does not have yaml/yml as known_source_ext in backend/open_webui/retrieval/loaders/main.py, so it forwards it to docling-serve, which will reject the request.
I would have two suggestions and would be willing to implement and provide a pull request for that :)
Change the error to something more meaningful, at least for docling
In every case use a TextLoader for such files, regardless of the engine
Any thoughts? :)
Originally created by @lukaaas176 on GitHub (Mar 5, 2026).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/22263
### 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
Pip Install
### Open WebUI Version
v0.8.8
### Ollama Version (if applicable)
v0.17.4
### Operating System
Ubuntu 24.04
### Browser (if applicable)
Firefox
### 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
Uploading a yaml should treat is as a text-file and load it with a TextLoader
### Actual Behavior
It forwards it to docling, which will fail.
### Steps to Reproduce
1. Setup openwebui as you want
2. Use docling document engine and have docling serve running somewhere
3. Upload a yaml file
### Logs & Screenshots
<img width="365" height="137" alt="image" src="https://github.com/user-attachments/assets/f9caf14d-5798-4d56-9870-8a92df999328" />
```
Mar 05 13:50:01 hostname uvx[473121]: ERROR:docling.datamodel.document:Input document open-webui-data/uploads/00657899-4740-4928-85dd-17ecfefd15d0_2JQS.yaml with format None does not match any allowed format: (dict_keys([<InputFormat.DOCX: 'docx'>, <InputFormat.PPTX: 'pptx'>, <InputFormat.HTML: 'html'>, <InputFormat.IMAGE: 'image'>, <InputFormat.PDF: 'pdf'>, <InputFormat.ASCIIDOC: 'asciidoc'>, <InputFormat.MD: 'md'>, <InputFormat.CSV: 'csv'>, <InputFormat.XLSX: 'xlsx'>, <InputFormat.XML_USPTO: 'xml_uspto'>, <InputFormat.XML_JATS: 'xml_jats'>, <InputFormat.XML_XBRL: 'xml_xbrl'>, <InputFormat.METS_GBS: 'mets_gbs'>, <InputFormat.JSON_DOCLING: 'json_docling'>, <InputFormat.AUDIO: 'audio'>, <InputFormat.VTT: 'vtt'>, <InputFormat.LATEX: 'latex'>]))
Mar 05 13:50:03 hostname uvx[473121]: INFO: other-host:0 - "POST /v1/convert/file HTTP/1.0" 200 OK
```
### Additional Information
Hey :)
After deploying a test instance at my university, testers found out that uploading any yaml file throws the error in the screenshot
After reporting it to me, i was able to easly reproduce it: Open-WebUI does not have yaml/yml as known_source_ext in `backend/open_webui/retrieval/loaders/main.py`, so it forwards it to docling-serve, which will reject the request.
I would have two suggestions and would be willing to implement and provide a pull request for that :)
- Change the error to something more meaningful, at least for docling
- In every case use a TextLoader for such files, regardless of the engine
Any thoughts? :)
GiteaMirror
added the bug label 2026-04-25 09:26:55 -05:00
Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
Originally created by @lukaaas176 on GitHub (Mar 5, 2026).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/22263
Check Existing Issues
Installation Method
Pip Install
Open WebUI Version
v0.8.8
Ollama Version (if applicable)
v0.17.4
Operating System
Ubuntu 24.04
Browser (if applicable)
Firefox
Confirmation
README.md.Expected Behavior
Uploading a yaml should treat is as a text-file and load it with a TextLoader
Actual Behavior
It forwards it to docling, which will fail.
Steps to Reproduce
Logs & Screenshots
Additional Information
Hey :)
After deploying a test instance at my university, testers found out that uploading any yaml file throws the error in the screenshot
After reporting it to me, i was able to easly reproduce it: Open-WebUI does not have yaml/yml as known_source_ext in
backend/open_webui/retrieval/loaders/main.py, so it forwards it to docling-serve, which will reject the request.I would have two suggestions and would be willing to implement and provide a pull request for that :)
Any thoughts? :)
@Classic298 commented on GitHub (Mar 8, 2026):
https://github.com/open-webui/open-webui/commit/710320601a3b15dc65acc3944c81455257be46ac