Xamarin + MvvmCross 6.0 unable to implement tabs navigation - xamarin

Question

I'm building a simple Xamarin app using MvvmCross and I'm currently unable to implement tabs navigation.
I'm getting an Mvx Exception: viewpager or tablayout not found
This is my main activity:
[MvxActivityPresentation]
[Activity(Theme = "#style/MainTheme",ConfigurationChanges=Android.Content.PM.ConfigChanges.Orientation |
Android.Content.PM.ConfigChanges.ScreenSize)]
public class TabsRootView : MvxAppCompatActivity<TabsRootViewModel>
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.tabs_root_view);
if (bundle == null)
{
ViewModel.ShowInitialViewModelsCommand.Execute();
}
}
}
This is my tabs root view layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
local:popupTheme="#style/ThemeOverlay.AppCompat.Light"
local:layout_scrollFlags="scroll|enterAlways">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="16dp"
local:tabGravity="center"
local:tabMode="scrollable" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
local:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
This is supposed to be one of my tabs content fragment (the other one looks the almost the same):
[MvxTabLayoutPresentation(TabLayoutResourceId = Resource.Id.tabs, ViewPagerResourceId = Resource.Id.viewpager, Title = "Bacheca", ActivityHostViewModelType = typeof(TabsRootViewModel))]
[Register(nameof(PostsView))]
public class PostsView : MvxFragment<PostsViewModel>
{
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
base.OnCreateView(inflater, container, savedInstanceState);
var view = this.BindingInflate(Resource.Layout.posts_view, null);
// RecyclerView
var recyclerView = view.FindViewById<MvxRecyclerView>(Resource.Id.recycler_view);
recyclerView.SetLayoutManager(new LinearLayoutManager(Activity));
recyclerView.HasFixedSize = false;
// Swipe touch helper
var callback = new SwipeItemTouchHelperCallback(ViewModel);
var touchHelper = new ItemTouchHelper(callback);
touchHelper.AttachToRecyclerView(recyclerView);
return view;
}
}