I have searched the existing issues and discussions.
I am using the latest version of Open WebUI.
Installation Method
Git Clone
Open WebUI Version
v0.6.12
Ollama Version (if applicable)
n/a
Operating System
Ubuntu 22.04
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
RAG should work without errors
Actual Behavior
I'm getting this error when using RAG after upgrading to v0.6.12. Downgrading to v0.6.11 makes it go away:
400: litellm.BadRequestError: BedrockException - {"message":"The additional field system conflicts with an existing field. Remove system and try again."}. Received Model Group=anthropic.claude-sonnet-4-20250514-v1:0 Available Model Group Fallbacks=None
Using this same model WITHOUT RAG works just fine.
Steps to Reproduce
Setup RAG on v0.6.12
I'm using LiteLLM with Bedrock models
Bedrock is also used for both embedding and reranking
Upload PDFs as knowledge and create a model pointing at that knowledge (basic RAG setup as per OWUI docs)
Logs & Screenshots
400: litellm.BadRequestError: BedrockException - {"message":"The additional field system conflicts with an existing field. Remove system and try again."}. Received Model Group=anthropic.claude-sonnet-4-20250514-v1:0 Available Model Group Fallbacks=None
Additional Information
No response
Originally created by @bb-chris on GitHub (May 29, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/14463
### Check Existing Issues
- [x] I have searched the existing issues and discussions.
- [x] I am using the latest version of Open WebUI.
### Installation Method
Git Clone
### Open WebUI Version
v0.6.12
### Ollama Version (if applicable)
n/a
### Operating System
Ubuntu 22.04
### 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
RAG should work without errors
### Actual Behavior
I'm getting this error when using RAG after upgrading to v0.6.12. Downgrading to v0.6.11 makes it go away:
`400: litellm.BadRequestError: BedrockException - {"message":"The additional field system conflicts with an existing field. Remove system and try again."}. Received Model Group=anthropic.claude-sonnet-4-20250514-v1:0 Available Model Group Fallbacks=None`
Using this same model WITHOUT RAG works just fine.
### Steps to Reproduce
- Setup RAG on v0.6.12
- I'm using LiteLLM with Bedrock models
- Bedrock is also used for both embedding and reranking
- Upload PDFs as knowledge and create a model pointing at that knowledge (basic RAG setup as per OWUI docs)
### Logs & Screenshots
`400: litellm.BadRequestError: BedrockException - {"message":"The additional field system conflicts with an existing field. Remove system and try again."}. Received Model Group=anthropic.claude-sonnet-4-20250514-v1:0 Available Model Group Fallbacks=None`
### Additional Information
_No response_
GiteaMirror
added the bug label 2026-05-25 05:55:56 -05:00
what content extraction engine are you using?
Verify in Admin Document settings.
<!-- gh-comment-id:2918126936 -->
@Hisma commented on GitHub (May 29, 2025):
what content extraction engine are you using?
Verify in Admin Document settings.
@stanislavKosacek commented on GitHub (May 29, 2025):
I have same issue with every custom model with OpenAI models. 400: litellm.BadRequestError: OpenAIException - Unrecognized request argument supplied: system. Received Model Group=gpt-4.1 Available Model Group Fallbacks=None.
I also use connection to LiteLLM. It starts after update to Open WebUI v0.6.12.
<!-- gh-comment-id:2918560160 -->
@stanislavKosacek commented on GitHub (May 29, 2025):
I have same issue with every custom model with OpenAI models.
`400: litellm.BadRequestError: OpenAIException - Unrecognized request argument supplied: system. Received Model Group=gpt-4.1
Available Model Group Fallbacks=None`.
I also use connection to LiteLLM. It starts after update to Open WebUI v0.6.12.
<img width="1139" alt="Image" src="https://github.com/user-attachments/assets/73092261-5e2d-4e03-bed5-f6c953f064b5" />
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 @bb-chris on GitHub (May 29, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/14463
Check Existing Issues
Installation Method
Git Clone
Open WebUI Version
v0.6.12
Ollama Version (if applicable)
n/a
Operating System
Ubuntu 22.04
Browser (if applicable)
No response
Confirmation
README.md.Expected Behavior
RAG should work without errors
Actual Behavior
I'm getting this error when using RAG after upgrading to v0.6.12. Downgrading to v0.6.11 makes it go away:
400: litellm.BadRequestError: BedrockException - {"message":"The additional field system conflicts with an existing field. Remove system and try again."}. Received Model Group=anthropic.claude-sonnet-4-20250514-v1:0 Available Model Group Fallbacks=NoneUsing this same model WITHOUT RAG works just fine.
Steps to Reproduce
Logs & Screenshots
400: litellm.BadRequestError: BedrockException - {"message":"The additional field system conflicts with an existing field. Remove system and try again."}. Received Model Group=anthropic.claude-sonnet-4-20250514-v1:0 Available Model Group Fallbacks=NoneAdditional Information
No response
@Hisma commented on GitHub (May 29, 2025):
what content extraction engine are you using?
Verify in Admin Document settings.
@stanislavKosacek commented on GitHub (May 29, 2025):
I have same issue with every custom model with OpenAI models.
400: litellm.BadRequestError: OpenAIException - Unrecognized request argument supplied: system. Received Model Group=gpt-4.1 Available Model Group Fallbacks=None.I also use connection to LiteLLM. It starts after update to Open WebUI v0.6.12.
@tjbck commented on GitHub (May 29, 2025):
This has nothing to do with RAG and more to do with custom params.
#14469