Keep getting ERROR_WRONG_USER_KEY

[svidhani]

I used your code and I keep getting ERROR_WRONG_USER_KEY even though my api key is correct. I can get it to work using python but when using nodejs i get this error.
The other diff is that using python i am using post as the method and with node i am using base64.

var solver = require('azcaptcha');
solver.setApiKey('myapikey');

solver.decodeUrl('http://ipindiaonline.gov.in/eregister/CaptchaImage.axd?guid=638a4fb8-637b-4c39-8ec8-3b9f1516d575', {pollingInterval: 10000}, (err, result, invalid) => {
console.log(err);
console.log(result);
console.log(invalid);
});

//output
ERROR_WRONG_USER_KEY