[PR #20534] [MERGED] fix: correct empty STT_ENGINE handling and improve TTS error response #48709

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GiteaMirror · 2026-04-30T00:45:08-05:00

GiteaMirror commented

2026-04-30 00:45:08 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/20534
Author: @silentoplayz
Created: 1/10/2026
Status: ✅ Merged
Merged: 1/10/2026
Merged by: @tjbck

Base: dev ← Head: fix/stt-tts-empty-engine-checks

📝 Commits (1)

1fcf575 fix: correct empty STT_ENGINE handling and improve TTS error response

📊 Changes

1 file changed (+2 additions, -8 deletions)

View changed files

📝 backend/open_webui/routers/audio.py (+2 -8)

📄 Description

Pull Request Checklist

Note to first-time contributors: Please open a discussion post in Discussions to discuss your idea/fix with the community before creating a pull request, and describe your changes before submitting a pull request.

This is to ensure large feature PRs are discussed with the community first, before starting work on it. If the community does not want this feature or it is not relevant for Open WebUI as a project, it can be identified in the discussion before working on the feature and submitting the PR.

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

Target branch: Verify that the pull request targets the dev branch. Not targeting the dev branch will lead to immediate closure of the PR.
Description: Provide a concise description of the changes made in this pull request down below.
Changelog: Ensure a changelog entry following the format of Keep a Changelog is added at the bottom of the PR description.
Documentation: If necessary, update relevant documentation Open WebUI Docs like environment variables, the tutorials, or other documentation sources.
Dependencies: Are there any new dependencies? Have you updated the dependency versions in the documentation?
Testing: Perform manual tests to verify the implemented fix/feature works as intended AND does not break any other functionality. Take this as an opportunity to make screenshots of the feature/fix and include it in the PR description.
Agentic AI Code: Confirm this Pull Request is not written by any AI Agent or has at least gone through additional human review AND manual testing. If any AI Agent is the co-author of this PR, it may lead to immediate closure of the PR.
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?
Title 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

Fixes incorrect checks for empty STT_ENGINE and TTS_ENGINE configuration values. An empty string for STT_ENGINE means "use local Whisper" (the default), not "not configured." This fix removes the blocking check on the STT /transcriptions endpoint and changes the TTS /speech endpoint error from 403 to 404 for proper semantic meaning.

Fixed

Removed incorrect 403 check on STT /transcriptions endpoint that blocked requests when STT_ENGINE="" (local whisper)
Changed TTS /speech endpoint error response from 403 to 404 when TTS_ENGINE="" (service not configured)
This PR should solve the issue described in https://github.com/open-webui/open-webui/issues/20531.

Additional Information

STT_ENGINE="" is the default value representing local Whisper engine
The other STT_ENGINE=="" checks in the code are correct logic for handling local whisper transcription
TTS_ENGINE="" indicates no TTS service is configured, so 404 (not found) is more appropriate than 403 (forbidden)

Contributor License Agreement

By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.

Note

Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in.

_{🔄 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/20534 **Author:** [@silentoplayz](https://github.com/silentoplayz) **Created:** 1/10/2026 **Status:** ✅ Merged **Merged:** 1/10/2026 **Merged by:** [@tjbck](https://github.com/tjbck) **Base:** `dev` ← **Head:** `fix/stt-tts-empty-engine-checks` --- ### 📝 Commits (1) - [`1fcf575`](https://github.com/open-webui/open-webui/commit/1fcf5754fcb0f2dbe7a29c334ed039c5da46516a) fix: correct empty STT_ENGINE handling and improve TTS error response ### 📊 Changes **1 file changed** (+2 additions, -8 deletions) <details> <summary>View changed files</summary> 📝 `backend/open_webui/routers/audio.py` (+2 -8) </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) to discuss your idea/fix with the community before creating a pull request, and describe your changes before submitting a pull request. This is to ensure large feature PRs are discussed with the community first, before starting work on it. If the community does not want this feature or it is not relevant for Open WebUI as a project, it can be identified in the discussion before working on the feature and submitting the PR. **Before submitting, make sure you've checked the following:** - [X] **Target branch:** Verify that the pull request targets the `dev` branch. **Not targeting the `dev` branch will lead to immediate closure of the PR.** - [X] **Description:** Provide a concise description of the changes made in this pull request down below. - [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. - [X] **Documentation:** If necessary, update relevant documentation [Open WebUI Docs](https://github.com/open-webui/docs) like environment variables, the tutorials, or other documentation sources. - [X] **Dependencies:** Are there any new dependencies? Have you updated the dependency versions in the documentation? - [X] **Testing:** Perform manual tests to **verify the implemented fix/feature works as intended AND does not break any other functionality**. Take this as an opportunity to **make screenshots of the feature/fix and include it in the PR description**. - [X] **Agentic AI Code:** Confirm this Pull Request is **not written by any AI Agent** or has at least **gone through additional human review AND manual testing**. If any AI Agent is the co-author of this PR, it may lead to immediate closure of the PR. - [X] **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] **Title 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 - Fixes incorrect checks for empty `STT_ENGINE` and `TTS_ENGINE` configuration values. An empty string for `STT_ENGINE` means "use local Whisper" (the default), not "not configured." This fix removes the blocking check on the STT `/transcriptions` endpoint and changes the TTS `/speech` endpoint error from 403 to 404 for proper semantic meaning. ### Fixed - Removed incorrect 403 check on STT `/transcriptions` endpoint that blocked requests when `STT_ENGINE=""` (local whisper) - Changed TTS `/speech` endpoint error response from `403` to `404` when `TTS_ENGINE=""` (service not configured) - This PR should solve the issue described in https://github.com/open-webui/open-webui/issues/20531. --- ### Additional Information - `STT_ENGINE=""` is the default value representing local Whisper engine - The other `STT_ENGINE==""` checks in the code are correct logic for handling local whisper transcription - `TTS_ENGINE=""` indicates no TTS service is configured, so `404` (not found) is more appropriate than `403` (forbidden) ### Contributor License Agreement By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms. > [!NOTE] > Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in. --- <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 2026-04-30 00:45:08 -05:00

GiteaMirror closed this issue

2026-04-30 00:45:11 -05:00

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Reference: github-starred/open-webui#48709