Google Recaptcha not working with axios

You need to add one more key to your request: secret. The error message is caused by missing response and secret parameters when sending POST request.

UPDATE: The POST params in the doc are not JSON, they must be passed as query string. That's why the error says it's missing both missing-input-response and missing-input-secret

axios.post(
  `https://www.google.com/recaptcha/api/siteverify?secret=${secret}&response=${response}`,
  {},
  {
    headers: {
      "Content-Type": "application/x-www-form-urlencoded; charset=utf-8"
    },
  },
);

Reference: Doc

I managed to solve it be adding params. I will accept Ryan Wus answer cause it is basically the same with different writing.

    try{
        let result = await axios({
            method: 'post',
            url: 'https://www.google.com/recaptcha/api/siteverify',
            params: {
                secret: '6LcarRkTAAAAAPDNrruugUg1fJqOJnH-uvVa5KIL',
                response: response
            }
        });
        let data = result.data || {};
        if(!data.success){
            throw({
                success: false,
                error: 'response not valid'
            })
        }
    }catch(err){
        console.log(err);
        throw err.response ? err.response.data : {success: false, error: 'captcha_error'}
    }