Unfortunately <appname> has stopped. Android

Hi all ! Could anyone suggest please why such kind of error sometimes happend ? Where find mistakes ?

Your system information:

Cordova CLI: 7.0.1
Ionic Framework Version: 3.5.3
Ionic CLI Version: 2.2.2
Ionic App Lib Version: 2.2.1
Ionic App Scripts Version: 2.0.2
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Windows 7
Node Version: v6.9.0
Xcode version: Not installed