Packaging Problem,i cannot Do Packaging also my Device was not on Preview

Can someone help me… please…

Im having a problem packaging it on mobile.

I have installed Android SDK, NDK, Ant and Java and also setup them on Environment variables
I have Installed Drivers for my Phone(Acer LiquidZ630) and turned on my Usb Debugging.
I also checked my device on Android Studio and its showing… also checked it on command adb devices and its showing up.

I tried to fix it on my own searching and also following the unreal engine docs for mobile but it still not work…
anyone can help me how to solve this?..

I just want to test my work on mobile device also i want to try packaging it on apk file to test it on other devices.

Im new, noob, and self studied unreal engine so please someone help me and answer it the way it will be understand by a newbie like me… Thanks in Advance …

Still no answer even from the UE…

i fixed this… i fetch an error on java.
i have an new problem.