Не работает lang для audio капчи

[C-Boygg]

Выбор языка бесполезен
result = await solver.audio(audio_path, lang='ru')
Потому что сам метод audio у вас никуда lang дальше не передаёт...
async def audio(self, file, lang, **kwargs):

async def audio(self, file, lang, **kwargs):
    '''Wrapper for solving audio captcha.

    Parameters
    __________
    body : str
        Base64 encoded audio file in mp3 format. Max file size: 1 MB.
    lang : str
      The language of audio record. Supported languages are: "en", "ru", "de", "el", "pt", "fr".
    '''

    method = "audio"

    if not file:
        raise ValidationException('File is none')
    elif not '.' in file and len(file) > 50:
        body = file
    elif file.endswith(".mp3") and file.startswith("http"):
        async with httpx.AsyncClient(follow_redirects=True) as client:
            response = await client.get(file)
            if response.status_code != 200:
                raise ValidationException(f'File could not be downloaded from url: {file}')
            body = b64encode(response.content).decode('utf-8')
    elif file.endswith(".mp3"):
        async with aiofiles.open(file, "rb") as media:
            file_content = await media.read()
            body = b64encode(file_content).decode('utf-8')
    else:
        raise ValidationException('File extension is not .mp3 or it is not a base64 string.')

    if not lang or lang not in ("en", "ru", "de", "el", "pt", "fr"):
        raise ValidationException(f'Lang not in "en", "ru", "de", "el", "pt", "fr". You send {lang}')

    result = await self.solve(body=body, method=method, **kwargs)
    return result

по итогу просто всегда ставится английский
{ "captchatype": "solveaudio", "mimetype": "audio/mpeg", "size": 45.63, "lang": "en", "soft_id": 4580 }