Voice over IP - Custom TTS

When i selecting another TTS output, other than HA Cloud or Piper for my Voice over IP agent, i hear no response and i get this error:

Logger: homeassistant
Source: components/assist_pipeline/pipeline.py:578
First occurred: 02:06:08 (5 occurrences)
Last logged: 02:06:30

Error doing job: Task exception was never retrieved
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/components/voip/voip.py”, line 269, in _run_pipeline
await async_pipeline_from_audio_stream(
File “/usr/src/homeassistant/homeassistant/components/assist_pipeline/init.py”, line 81, in async_pipeline_from_audio_stream
await pipeline_input.validate()
File “/usr/src/homeassistant/homeassistant/components/assist_pipeline/pipeline.py”, line 767, in validate
await asyncio.gather(*prepare_tasks)
File “/usr/src/homeassistant/homeassistant/components/assist_pipeline/pipeline.py”, line 578, in prepare_text_to_speech
raise TextToSpeechError(
homeassistant.components.assist_pipeline.error.TextToSpeechError: Pipeline error code=tts-not-supported, message=Text-to-speech engine tts.google_de_de does not support language de or options {‘audio_output’: ‘raw’}

Have anyone else this issue?