Building with Cordova plugins

I added some Cordova plugins to my project. However, it seems like it’s failing to build because of this.

Here’s the output:

What is wrong with it?

Oh man, thats a crazy error. Hmm, can you provide the steps you took to get this error?

I just installed the plugins using the directions on ngcordova.com.

Eventually I ran the platform remove ios command, and re-added it. That got me rid of the error