Error: [$http:badreq] Http request configuration url must be a string. Received

$http.get is a shortcut method for $http({ method: 'GET' }), and expects the URL as the first parameter.

Solution:

 
$http({
  method: 'JSONP',
  url: url
}).then(function successCallback(response) {
  // ok
}, function errorCallback(response) {
  // ko
});