UE4 project launcher (android) build failed

I tried to run my game through launch>project launcher> and then selected my phone that i connected with usb, and then this error message pops up

Running AutomationTool…
Parsing command line: -ScriptsForProject=“C:/Users/Napoleon Yong/Documents/Unreal Projects/VRGear/VRGear.uproject” BuildCookRun -project=“C:/Users/Napoleon Yong/Documents/Unreal Projects/VRGear/VRGear.uproject” -noP4 -clientconfig=Development -serverconfig=Development -nocompile -nocompileeditor -installed -ue4exe=UE4Editor-Cmd.exe -utf8output -platform=Android_ASTC -targetplatform=Android -cookflavor=ASTC -ini:Game:[/Script/UnrealEd.ProjectPackagingSettings]:BlueprintNativizationMethod=Disabled -cookonthefly -nokill -map= -compressed -stage -deploy -cmdline=" -Messaging" -device=Android_ASTC@ce08171815c720090c7e -addcmdline="-SessionId=1FBB33D94108DE403D87E496AF4F99B1 -SessionOwner=‘Napoleon Yong’ -SessionName=‘SM_N950F (ce08171815c720090c7e)’ " -run
Setting up ProjectParams for C:\Users\Napoleon Yong\Documents\Unreal Projects\VRGear\VRGear.uproject
********** COOK COMMAND STARTED **********
Running: D:\UE_4.19\Engine\Binaries\Win64\UE4Editor.exe “C:\Users\Napoleon Yong\Documents\Unreal Projects\VRGear\VRGear.uproject” -run=cook -cookonthefly -unattended -CrashForUAT -log -abslog=“C:\Users\Napoleon Yong\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+UE_4.19\Server.log” -SessionId=1FBB33D94108DE403D87E496AF4F99B1 -SessionOwner=“Napoleon Yong” -SessionName=“SM_N950F (ce08171815c720090c7e)”
Waiting a few seconds for the server to start…
********** COOK COMMAND COMPLETED **********
********** STAGE COMMAND STARTED **********
ERROR: GetBuildPlatform: No BuildPlatform found for Android
(see C:\Users\Napoleon Yong\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+UE_4.19\UAT_Log.txt for full exception trace)
AutomationTool exiting with ExitCode=1 (Error_Unknown)
BUILD FAILED
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Hello,

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Thanks