getting Cannot read property 'alias' of undefined

[introvert]

Hello,

I'm having issues when calling the alias function (I'm using Mixpanel and GoogleTagManager adapter) from a unauthenticatedRouteMixin mixin that I use for my app routes. It looks like Ember.get(this, 'metrics') is undefined.

The error occurres when I do:

const metrics = Ember.get(this, 'metrics');
metrics.alias(distinct_id);

Here's my configuration:

    metricsAdapters: [
      {
        name: 'GoogleTagManager',
        environments: ['development', 'production'],
        config: {
          id: 'GTM-KKHS44'
        }
      },
      {
        name: 'Mixpanel',
        environments: ['development', 'production'],
        config: {
          token: 'bcb8f05d6f6fbac46a206227b4ec7'
        }
      }
    ],

The other methods - identify, trackEvent and trackPage seems to be working fine..

Why is that?

Thanks

[introvert]

Nevermind, it was a problem with my code..