Application in Ember don't recognize model so it end up with index data is null

I'm started adventure with Ember few weeks ago. I have solid progress thanks to docs and example around the internet.

Sadly I hit solid wall with this one as have almost copy-pase models which few works and one and only one don't want to work.

The error that I see in Inspector is:

Encountered a resource object with type "series", but no model was found for model name "series" (resolved model name using 'my-app@serializer:-json-api:.modelNameFromPayloadKey("series"))
Error while processing route: serie.index data is null...

I'm using mirage fixtures with success

// mirage/fixtures/files.js
export default [
{duration:'1',filename:'1.mkv',size:'1',id:'1',url:'dl/1.mkv'},
{duration:'2',filename:'2.mkv',size:'2',id:'2',url:'dl/2.mkv'}
];

// mirage/fixtures/series.js
export default [
{type:'show',title:'ser1',summary:'123',id:'11'},
{type:'show',title:'ser2',summary:'234',id:'12'}
];

Both use same model for mirage

// mirage/model/file.js
// mirage/model/serie.js
import { Model } from 'ember-cli-mirage';
export default Model.extend({
});

I load fixtures this way:

// mirage/scenarios/default.js
export default function(server) {
server.loadFixtures();
}

And serializer is set on mirage this way:

// mirage/serializers/application.js
import { JSONAPISerializer } from 'ember-cli-mirage';
export default JSONAPISerializer.extend({
});

only thing that I added to config is

// added to mirage/config.js
this.namespace = 'api';
this.get('/series');
this.get('/series/:id');
this.get('/files');
this.get('/files/:id');

There is nothing more to do with mirage so let's move onto ember.

// app/adapters/application.js
application.js 
import DS from 'ember-data';
export default DS.JSONAPIAdapter.extend({
    namespace: 'api'
});

Both user same component

// app/components/file-view.js
// app/components/serie-view.js
import Ember from 'ember';
export default Ember.Component.extend({
});

Models are define this way:

// app/models/file.js
import DS from 'ember-data';

export default DS.Model.extend({
    filename: DS.attr(),
    url: DS.attr(),
    art: DS.attr()
});

// app/models/serie.js
import DS from 'ember-data';

export default DS.Model.extend({
    title: DS.attr(),
    type: DS.attr(),
    summary: DS.attr()
});

// app/router.js
import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: config.locationType,
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('serie', function() {
    this.route('show');
  });
  this.route('file', function() {
    this.route('show');
  });
});

export default Router;

Routes are almost identical

// app/routes/file.js
import Ember from 'ember';

export default Ember.Route.extend({
        model() {
                return this.get('store').findAll('file');
        }
});

// app/routes/serie.js
import Ember from 'ember';

export default Ember.Route.extend({
    model() {
        return this.get('store').findAll('serie');
    }
});

Same goes to templates

// app/templates/file.hbs
<h2>Files</h2>


    



// app/templates/serie.hbs
<h2>Series</h2>


    

And last are component templates:

// app/templates/components/file-view.js
<div>
<img src="cover.jpg" width=200 hight=200 alt="">
<h3> id: </h3>
</div>

// app/templates/components/serie-view.js
<div>
<h3>  id: </h3>
Summary: 
</div>

And as http://localhost:4200/file work excellent the http://localhost:4200/serie throw error on me

I try to struggle with this by removing unnecessary code and models so I could narrow the problem but end up with having two models that are very similar with almost copy-paste function and having one work other don't.

I really have no idea what is this about anymore.