Karma error "originalErr": {}

I have tried alot of answers online now but gone none to work.
After some problems with required not defined or import not defined I now get this error

10 10 2016 15:59:11.883:INFO [launcher]: Trying to start Chrome again (1/2).
10 10 2016 15:59:13.005:INFO [Chrome 53.0.2785 (Windows 10 0.0.0)]: Connected on socket /#hH9FWmB4olNIwUP3AAAB with id 30117285
10 10 2016 15:59:13.246:WARN [web-server]: 404: /angular2/src/platform/browser/browser_adapter
Chrome 53.0.2785 (Windows 10 0.0.0) ERROR
  {
    "originalErr": {}
  }

Chrome 53.0.2785 (Windows 10 0.0.0) ERROR
  {
    "originalErr": {}
  }

I am new to Karma so really dont know how to solve this.

var spacken = require('../../app/overview.component');
describe('MyService Tests', () => {

    it('Should return a list of dogs', () => {
        var spackenVar;
        spacken.test(spackenVar);

        expect(spackenVar).toEqual('red');
    });
});