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
0.6.35
Ollama Version (if applicable)
0.12.10
Operating System
Truenas Scale 25.10
Browser (if applicable)
edge / safari / chrome
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
Using tool with mcpo API like in 0.6.34
Actual Behavior
mcpo tool call fail
"object function can't be used in 'await' expression"
Steps to Reproduce
update to 0.6.35
try a tool hosted behind mcpo like you did in earlier version
you got
"object function can't be used in 'await' expression"
Logs & Screenshots
Additional Information
tried 3 tools.
I have some of these tools also in HTTP or SSE mode direct in owui and worked fine.
Originally created by @GlisseManTV on GitHub (Nov 6, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/18981
### 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
0.6.35
### Ollama Version (if applicable)
0.12.10
### Operating System
Truenas Scale 25.10
### Browser (if applicable)
edge / safari / chrome
### 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
Using tool with mcpo API like in 0.6.34
### Actual Behavior
mcpo tool call fail
"object function can't be used in 'await' expression"
### Steps to Reproduce
update to 0.6.35
try a tool hosted behind mcpo like you did in earlier version
you got
"object function can't be used in 'await' expression"
### Logs & Screenshots
<img width="2911" height="1184" alt="Image" src="https://github.com/user-attachments/assets/f5eb2fd1-2742-46f6-9fb8-fe91e08727fd" />
### Additional Information
tried 3 tools.
I have some of these tools also in HTTP or SSE mode direct in owui and worked fine.
GiteaMirror
added the bug label 2026-05-13 05:38:31 -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 @GlisseManTV on GitHub (Nov 6, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/18981
Check Existing Issues
Installation Method
Docker
Open WebUI Version
0.6.35
Ollama Version (if applicable)
0.12.10
Operating System
Truenas Scale 25.10
Browser (if applicable)
edge / safari / chrome
Confirmation
README.md.Expected Behavior
Using tool with mcpo API like in 0.6.34
Actual Behavior
mcpo tool call fail
"object function can't be used in 'await' expression"
Steps to Reproduce
update to 0.6.35
try a tool hosted behind mcpo like you did in earlier version
you got
"object function can't be used in 'await' expression"
Logs & Screenshots
Additional Information
tried 3 tools.
I have some of these tools also in HTTP or SSE mode direct in owui and worked fine.
@Haervwe commented on GitHub (Nov 6, 2025):
Just made a PR to fix exactly this ! #18984
@GlisseManTV commented on GitHub (Nov 6, 2025):
Thanks for this info and work.
For the moment I reverted to .34
@GlisseManTV commented on GitHub (Nov 6, 2025):
@Haervwe adressed in dev .36
https://github.com/open-webui/open-webui/pull/18978/commits/c2c02846a8745859ea48ac8b8b8a9f746f6e659b