manim-voiceover xtts AttributeError and voice cloning

[manimator-code]

I'm using Coqui TTS with xtts model.

class test(VoiceoverScene):
    def construct(self):
        self.set_speech_service(CoquiService(model_name="tts_models/multilingual/multi-dataset/xtts_v2",gpu=True))

gives AttributeError: 'TTS' object has no attribute 'languages' But it does have that attribute! With other models, it doesn't throw this error.

Also, where can I set speaker_wav=["speaker.wav"] for voice cloning?