Can build on 4.11 but not (for Android)

from what I’ve read in other on the topic, it said when you see errors like these its a vague android error that isn’t very helpful or telling. But here’s some excerpts:

MainFrameActions: Packaging (Android (All)): UnrealBuildTool:
MainFrameActions: Packaging (Android (All)): UnrealBuildTool: BUILD FAILED
MainFrameActions: Packaging (Android (All)): UnrealBuildTool: D:\android-sdk-windows\tools\ant\build.xml:892: The following error occurred while executing this line:
MainFrameActions: Packaging (Android (All)): UnrealBuildTool: D:\android-sdk-windows\tools\ant\build.xml:894: The following error occurred while executing this line:
MainFrameActions: Packaging (Android (All)): UnrealBuildTool: D:\android-sdk-windows\tools\ant\build.xml:906: The following error occurred while executing this line:
MainFrameActions: Packaging (Android (All)): UnrealBuildTool: D:\android-sdk-windows\tools\ant\build.xml:283: null returned: 2

MainFrameActions: Packaging (Android (All)): Program.Main: AutomationTool exiting with ExitCode=5 (5)
MainFrameActions: Packaging (Android (All)): Domain_ProcessExit
MainFrameActions: Packaging (Android (All)): copying UAT log files…
MainFrameActions: Packaging (Android (All)): BUILD FAILED
PackagingResults:Error: Error Unknown Error