Can't build with crosswalk added

So I built my ionic 2 app to android, and found the animations to be less than smooth - so I added crosswalk;
ionic plugin add cordova-plugin-crosswalk-webview
(ionic browser add crosswalk was deprecated, suggested me to use this.)

Now when I build, I’m given this error;

I’m guessing it’s missing SDK stuff, but I have these ‘Extras’ added to android SDK, as well as all the Google API system images for my build targets.

(I’ve also added Play Services since this screnshot)

What am I missing?

So, problem solved, it was Local maven repos.