java.lang.RuntimeException: Unable to start service com.entitcs.office_attendance.model_classes.GPSTracker@45d0637 with Intent { cmp=com.entitcs.office_attendance/.model_classes.GPSTracker }: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.net.NetworkInfo.isAvailable()' on a null object reference
	at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4431)
	at android.app.ActivityThread.access$1900(ActivityThread.java:245)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2090)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loop(Looper.java:237)
	at android.app.ActivityThread.main(ActivityThread.java:7824)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:512)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1027)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.net.NetworkInfo.isAvailable()' on a null object reference
	at com.entitcs.office_attendance.model_classes.ValidationClass.isInternetAvailable(ValidationClass.java:25)
	at com.entitcs.office_attendance.model_classes.GPSTracker.sendGPSStatusToServer(GPSTracker.java:192)
	at com.entitcs.office_attendance.model_classes.GPSTracker.<init>(GPSTracker.java:108)
	at com.entitcs.office_attendance.model_classes.GPSTracker.onStartCommand(GPSTracker.java:101)
	at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4399)
	... 8 more