I have an error while trying to connect to the api with my unity app

Game Development
3

Sorry but I have changed to try it on another way, It’s not that the problem i have tried right now again without caps and I have the same error.

I forgot to add this lines:

// Clase para el token de autenticación de Twitch
    [System.Serializable]
    private class AuthToken
    {
        public string access_token;
        public string token_type;
    }

    // Clase para la información del stream de Twitch
    [System.Serializable]
    private class StreamInfo
    {
        public StreamData[] data;
    }

    [System.Serializable]
    private class StreamData
    {
        public string thumbnail_url;
    }