Angular spinKit with Ionic works only in browser but not in finished builds?

Hi everybody,

I configured my ionic app with the angular spinkit ( and it looked like everything is fine.

In my browser all works perfect and the image load spinner work flawless but once I build my ios and android apps the spinners are invisible. Since they work in my browser correct I guess I did everything as I should but I wonder why the spinners dont appear in my finished apps.

Of course I can opt for other spinners but I would really like to use this spinkit and would be happy if somebody has a tip for me.

thanks in advance