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
v0.6.37
Ollama Version (if applicable)
No response
Operating System
Debian 12
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
Generate image successfully with custom base URL served by LiteLLM.
Why there is a comma after the string? Removing the comma fixes the problem.
Logs & Screenshots
{
"model": "gemini-2.5-flash",
"stream": true,
"messages": [
{
"role": "system",
"content": "Image generation was attempted but failed. The system is currently unable to generate the image. Tell the user that an error occurred: [ERROR: No connection adapters were found for "('http://litellm-dev:8000/v1/images/generations',)"]"
},
{
"role": "user",
"content": "Draw me a penguin"
}
]
}
Additional Information
No response
Originally created by @emc2314 on GitHub (Nov 24, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/19409
### 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
v0.6.37
### Ollama Version (if applicable)
_No response_
### Operating System
Debian 12
### 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
Generate image successfully with custom base URL served by LiteLLM.
### Actual Behavior
[ERROR: No connection adapters were found for \"('http://litellm-dev:8000/v1/images/generations',)\"]
### Steps to Reproduce
Just use docker with litellm gemini models using openai API.
https://github.com/open-webui/open-webui/blob/fc05e0a6c5d39da60b603b4d520f800d6e36f748/backend/open_webui/routers/images.py#L552-L554
Why there is a comma after the string? Removing the comma fixes the problem.
### Logs & Screenshots
{
"model": "gemini-2.5-flash",
"stream": true,
"messages": [
{
"role": "system",
"content": "<context>Image generation was attempted but failed. The system is currently unable to generate the image. Tell the user that an error occurred: [ERROR: No connection adapters were found for \"('http://litellm-dev:8000/v1/images/generations',)\"]</context>"
},
{
"role": "user",
"content": "Draw me a penguin"
}
]
}
### Additional Information
_No response_
GiteaMirror
added the bug label 2026-05-25 10:55:23 -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 @emc2314 on GitHub (Nov 24, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/19409
Check Existing Issues
Installation Method
Docker
Open WebUI Version
v0.6.37
Ollama Version (if applicable)
No response
Operating System
Debian 12
Browser (if applicable)
No response
Confirmation
README.md.Expected Behavior
Generate image successfully with custom base URL served by LiteLLM.
Actual Behavior
[ERROR: No connection adapters were found for "('http://litellm-dev:8000/v1/images/generations',)"]
Steps to Reproduce
Just use docker with litellm gemini models using openai API.
https://github.com/open-webui/open-webui/blob/fc05e0a6c5d39da60b603b4d520f800d6e36f748/backend/open_webui/routers/images.py#L552-L554
Why there is a comma after the string? Removing the comma fixes the problem.
Logs & Screenshots
{
"model": "gemini-2.5-flash",
"stream": true,
"messages": [
{
"role": "system",
"content": "Image generation was attempted but failed. The system is currently unable to generate the image. Tell the user that an error occurred: [ERROR: No connection adapters were found for "('http://litellm-dev:8000/v1/images/generations',)"]"
},
{
"role": "user",
"content": "Draw me a penguin"
}
]
}
Additional Information
No response
@Classic298 commented on GitHub (Nov 24, 2025):
gemini 2.5 flash is not an image model