I have 2 pages. One page contains another, where the Grid looks like the following:

```
        <Grid>
            <views:MapViewPage/>
        </Grid>

```

I've included the `views` namespace correctly and everything runs fine but the designer seems to be having a bit of an issue with this.

It underlines the views:MapViewPage line and says object reference not set to an instance of an object, and complains about the constructor. I don't understand why, I've done this in WPF where I've included views in another page or window so I don't understand why the XAML designer complains in UWP. I've restarted visual studio and deleted the bin and obj directories but i still see the error - builds fine and runs fine tho... and includes the view as expected...