Application Error net::ERR_CONNECTION_REFUSE

Hi geeks thanks in advance for help

my ionic-V3 app when I installed on Samsung S4 device it prompts error like this and app crashed.

Did you ever get this fixed?

I faced this same problem when I was messing with the cordova run options. I fixed reseting the address to the default one when running the app again:

ionic cordova run android --address= --port=8100