angularjs call another url when using $http.get

I'm using angular js and I try to use $http.get to call my server side.

my url is "http://www.muslimsquare.com/sandbox/user_login.php" so I put $http.get like 

$http.get('http://www.muslimsquare.com/sandbox/user_login.php').then(function(resp) {
        alert(resp.status)
      }, function(err) {
        console.error('ERR', err);
});

When this code has beed called, I got the error show like this.

enter image description here

It's look like they call another url, not http://www.muslimsquare.com/sandbox/user_login.php (I user google chrome). I already try to change url to another domain, its work. just this domain does not work.

does anyone know how to fix this problem?

Regards.