Make sure both you device and the computer running ionic server are connected to the same network (either wifi access point or by setting up wifi hotspot on your phone/device and connecting to it from the computer).
The app on the device is trying to fetch all controllers/services/views etc (content of www, not plugins) from the computer instead of locally on the device.
If you can't get both the device and the computer on the same network, consider running without the -lcs flag (and then no auto update, when you change your code you will have to run the command again to update the app on your device).