#7856 API URL is error: :{'text': '你好啊，我亲爱的朋友，希望你的每一天都是美好愉快的！', 'role': 'zh_female_tw.wav', 'filename': 'D:/PYTRAN/tmp/20552/1

The root cause is that the CosyVoice TTS channel (tts_type=14) is configured to call a Gradio API, but the API URL field is empty (API URL is error: with nothing after it). The code path shows _cosyvoice.py → _gradio.py, which means CosyVoice is being accessed via the Gradio interface and requires a valid WebUI/API address.

Steps to fix:

1. Make sure your local CosyVoice service is actually running and that its WebUI page works in a browser.
2. Open the software menu: Menu → TTS Settings → CosyVoice (设置 → TTS设置 → CosyVoice).

3. Fill in the correct API/WebUI URL, for example http://127.0.0.1:50000/ (use the actual host and port your CosyVoice service is listening on).

   • Do not use 0.0.0.0 — replace it with 127.0.0.1 if that's what you wrote.
4. Save the settings, then restart the software (or re-open the TTS settings window) so the new URL takes effect.
5. If you are using the Gradio WebUI, ensure a gradio_api.txt file exists in the software root directory (D:/PYTRAN) with the correct api_name and parameter mapping for your CosyVoice version.
6. Retry the dubbing.

Additional notes:

• The role zh_female_tw.wav is being treated as a voice/clone reference file. Confirm this file exists under the f5-tts folder or is properly registered via Menu → TTS Settings → Set Reference Audio.
• If CosyVoice is not actually deployed, switch to a built-in free channel such as Edge-TTS to avoid this error.

Please refer to the relevant documentation:

• CosyVoice setup
• Custom TTS API / Gradio integration
• All TTS channels