[PR #12547] [CLOSED] fix: internal server error when calling completions API with non-existent model names #38593

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GiteaMirror · 2026-04-25T11:32:53-05:00

GiteaMirror commented

2026-04-25 11:32:53 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/12547
Author: @HoKim98
Created: 4/7/2025
Status: ❌ Closed

Base: dev ← Head: fix/500-when-unknown-models

📝 Commits (1)

7bc143e fix: internal server error when calling completions API with non-existent model names

📊 Changes

1 file changed (+5 additions, -2 deletions)

View changed files

📝 backend/open_webui/main.py (+5 -2)

📄 Description

Pull Request Checklist

Note to first-time contributors: Please open a discussion post in Discussions and describe your changes before submitting a pull request.

Before submitting, make sure you've checked the following:

Target branch: Please verify that the pull request targets the dev branch.
Description: Provide a concise description of the changes made in this pull request.
Changelog: Ensure a changelog entry following the format of Keep a Changelog is added at the bottom of the PR description.
Documentation: Have you updated relevant documentation Open WebUI Docs, or other documentation sources?
Dependencies: Are there any new dependencies? Have you updated the dependency versions in the documentation?
Testing: Have you written and run sufficient tests to validate the changes?
Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
Prefix: To clearly categorize this pull request, prefix the pull request title using one of the following:
- BREAKING CHANGE: Significant changes that may affect compatibility
- build: Changes that affect the build system or external dependencies
- ci: Changes to our continuous integration processes or workflows
- chore: Refactor, cleanup, or other non-functional code changes
- docs: Documentation update or addition
- feat: Introduces a new feature or enhancement to the codebase
- fix: Bug fix or error correction
- i18n: Internationalization or localization changes
- perf: Performance improvement
- refactor: Code restructuring for better maintainability, readability, or scalability
- style: Changes that do not affect the meaning of the code (white space, formatting, missing semi-colons, etc.)
- test: Adding missing tests or correcting existing tests
- WIP: Work in progress, a temporary label for incomplete or ongoing work

Changelog Entry

Description

metadata variable is not declared when a 'Model not found' error occurs. However, the code intended to return a 400 error explicitly references the unbounded metadata variable. Due to their absence, a 500 error resulted instead. To address this, I have pre-declared the metadata variable as a placeholder and implemented validation of the value within the process intended to utilize them. No side effects occur.

Fixed

Internal Server Error when calling completions API with non-existent model names

Additional Information

Fixes [GH-ISSUE #1548] CUSTOM Litellm Provider Support? (#12546)

Screenshots or Videos

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/open-webui/open-webui/pull/12547 **Author:** [@HoKim98](https://github.com/HoKim98) **Created:** 4/7/2025 **Status:** ❌ Closed **Base:** `dev` ← **Head:** `fix/500-when-unknown-models` --- ### 📝 Commits (1) - [`7bc143e`](https://github.com/open-webui/open-webui/commit/7bc143e06797944254f97696fca4cff0a4707de1) fix: internal server error when calling completions API with non-existent model names ### 📊 Changes **1 file changed** (+5 additions, -2 deletions) <details> <summary>View changed files</summary> 📝 `backend/open_webui/main.py` (+5 -2) </details> ### 📄 Description # Pull Request Checklist ### Note to first-time contributors: Please open a discussion post in [Discussions](https://github.com/open-webui/open-webui/discussions) and describe your changes before submitting a pull request. **Before submitting, make sure you've checked the following:** - [x] **Target branch:** Please verify that the pull request targets the `dev` branch. - [x] **Description:** Provide a concise description of the changes made in this pull request. - [x] **Changelog:** Ensure a changelog entry following the format of [Keep a Changelog](https://keepachangelog.com/) is added at the bottom of the PR description. - [ ] **Documentation:** Have you updated relevant documentation [Open WebUI Docs](https://github.com/open-webui/docs), or other documentation sources? - [ ] **Dependencies:** Are there any new dependencies? Have you updated the dependency versions in the documentation? - [ ] **Testing:** Have you written and run sufficient tests to validate the changes? - [ ] **Code review:** Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards? - [x] **Prefix:** To clearly categorize this pull request, prefix the pull request title using one of the following: - **BREAKING CHANGE**: Significant changes that may affect compatibility - **build**: Changes that affect the build system or external dependencies - **ci**: Changes to our continuous integration processes or workflows - **chore**: Refactor, cleanup, or other non-functional code changes - **docs**: Documentation update or addition - **feat**: Introduces a new feature or enhancement to the codebase - **fix**: Bug fix or error correction - **i18n**: Internationalization or localization changes - **perf**: Performance improvement - **refactor**: Code restructuring for better maintainability, readability, or scalability - **style**: Changes that do not affect the meaning of the code (white space, formatting, missing semi-colons, etc.) - **test**: Adding missing tests or correcting existing tests - **WIP**: Work in progress, a temporary label for incomplete or ongoing work # Changelog Entry ### Description - `metadata` variable is not declared when a 'Model not found' error occurs. However, the code intended to return a 400 error explicitly references the unbounded `metadata` variable. Due to their absence, a 500 error resulted instead. To address this, I have pre-declared the metadata variable as a placeholder and implemented validation of the value within the process intended to utilize them. No side effects occur. ### Fixed - Internal Server Error when calling completions API with non-existent model names --- ### Additional Information - Fixes #12546 ### Screenshots or Videos --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-04-25 11:32:53 -05:00

GiteaMirror closed this issue

2026-04-25 11:32:54 -05:00

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Reference: github-starred/open-webui#38593