How to print Angular.js promise error status?

My code is like this,

app.controller('myController', function($scope, MyService, ...) {

    MyService.getInfoFromUrl('MyUrl').then(function(result) {
        console.log("Successfully get info from URL ...");
    }, function(error) {
        console.log("Server error ...");
        console.log(error);
    });
});

So when i test it with error path, i see Server error ... Undefined

What's the correct way to get error info please ?