Failed to package for IOS on PC with BuildGraph

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1. ^{Run Build Graph by Command "D:\Workspace\UnrealEngine\Engine\Build\BatchFiles\RunUAT.bat" BuildGraph -Script="D:\Testspace\TestGame\Build\Build.xml" -Target="Build IPA iOS"}
2.  ^{iPhonePackager compiled failed because the DotNETUtilities is loaded by AutomationTool.}

^{but if use commandline instead of buildgraph , there is no problem.}

^{"D:\Workspace\UnrealEngine\Engine\Build\BatchFiles\RunUAT.bat" BuildCookRun -TargetPlatform=IOS -project=D:\Testspace\TestGame\TestGame.uproject -ClientConfig=Development -UTF8Output -NoP4 -Prereqs -Build -NoCompileEditor -SkipBuildEditor -Pak -Cook -SkipCookingEditorContent -UnversionedCookedContent -CookPartialgc -Compressed -IterativeCooking -Stage -Package -Archive -ArchiveDirectory=D:\Testspace\TestGame\Binaries}

^{the build.xml and log uploaded.}