Program.Main: AutomationTool exiting with ExitCode=5 (5)

|UATHelper: Packaging (Windows (64-bit)): Running AutomationTool…
UATHelper: Packaging (Windows (64-bit)): Automation.ParseCommandLine: Parsing command line: -ScriptsForProject=“G:/Unreal Projects/THREE/THREE.uproject” BuildCookRun -nocompile -nocompileeditor -installed -nop4 -project=“G:/Unreal Projects/THREE/THREE.uproject” -cook -stage -archive -archivedirectory=H:/Three -package -clientconfig=Development -ue4exe=UE4Edi
tor-Cmd.exe -pak -prereqs -nodebuginfo -targetplatform=Win64 -build -utf8output
UATHelper: Packaging (Windows (64-bit)): BuildCookRun.SetupParams: Setting up ProjectParams for G:\Unreal Projects\THREE\THREE.uproject
UATHelper: Packaging (Windows (64-bit)): Project.Build: ********** BUILD COMMAND STARTED **********
UATHelper: Packaging (Windows (64-bit)): CommandUtils.Run: Run: F:\UE_4.16\Engine\Binaries\DotNET\UnrealBuildTool.exe THREE Win64 Development -Project=“G:\Unreal Projects\THREE\THREE.uproject” “G:\Unreal Projects\THREE\THREE.uproject” -NoUBTMakefiles -remoteini=“G:\Unreal Projects\THREE” -noxge -generatemanifest -NoHotReload
UATHelper: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 0.9286157s to run UnrealBuildTool.exe, ExitCode=0
UATHelper: Packaging (Windows (64-bit)): CommandUtils.Run: Run: F:\UE_4.16\Engine\Binaries\DotNET\UnrealBuildTool.exe THREE Win64 Development -Project=“G:\Unreal Projects\THREE\THREE.uproject” “G:\Unreal Projects\THREE\THREE.uproject” -NoUBTMakefiles -remoteini=“G:\Unreal Projects\THREE” -noxge -NoHotReload -ignorejunk
UATHelper: Packaging (Windows (64-bit)): UnrealBuildTool: ERROR: Windows SDK v8.1 must be installed in order to build this target.
UATHelper: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 2.6797787s to run UnrealBuildTool.exe, ExitCode=5
UATHelper: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.CommandUtils+CommandFailedException: Command failed (Result:5): F:\UE_4.16\Engine\Binaries\DotNET\UnrealBuildTool.exe THREE Win64 Development -Project=“G:\Unreal Projects\THREE\THREE.uproject” “G:\Unreal Projects\THREE\THREE.uproject” -NoUB
TMakefiles -remoteini=“G:\Unreal Projects\THREE” -noxge -NoHotReload -ignorejunk. See logfile for details: ‘UnrealBuildTool-2017.08.09-13.19.19.txt’
UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.RunAndLog(String App, String CommandLine, String Logfile, Int32 MaxSuccessCode, String Input, ERunOptions Options, Dictionary2 EnvVars, SpewFilterCallbackType SpewFilterCallback) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.RunAndLog(CommandEnvironment Env, String App, String CommandLine, String LogName, Int32 MaxSuccessCode, String Input, ERunOptions Options, Dictionary2 EnvVars, SpewFilterCallbackType SpewFilterCallback)
UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.RunUBT(CommandEnvironment Env, String UBTExecutable, String CommandLine, String LogName, Dictionary2 EnvVars) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.RunUBT(CommandEnvironment Env, String UBTExecutable, FileReference Project, String Target, String Platform, String Config, String AdditionalArgs, String LogName, Dictionary2 EnvVars)
UATHelper: Packaging (Windows (64-bit)): at AutomationTool.UE4Build.BuildWithUBT(String TargetName, UnrealTargetPlatform TargetPlatform, String Config, FileReference UprojectPath, Boolean ForceMonolithic, Boolean ForceNonUnity, Boolean ForceDebugInfo, Boolean ForceFlushMac, Boolean DisableXGE, String InAddArgs, Boolean ForceUnity, Dictionary2 EnvVars) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.UE4Build.Build(BuildAgenda Agenda, Nullable1 InDeleteBuildProducts, Boolean InUpdateVersionFiles, Boolean InForceNoXGE, Boolean InUseParallelExecutor, Boolean InForceNonUnity, Boolean InForceUnity, Boolean InShowProgress, Dictionary2 PlatformEnvVars, Nullable1 InChangelistNumberOverride, Dictio
nary2 InTargetToManifest) UATHelper: Packaging (Windows (64-bit)): at Project.Build(BuildCommand Command, ProjectParams Params, Int32 WorkingCL, ProjectBuildTargets TargetMask) UATHelper: Packaging (Windows (64-bit)): at BuildCookRun.DoBuildCookRun(ProjectParams Params) UATHelper: Packaging (Windows (64-bit)): at BuildCookRun.ExecuteBuild() UATHelper: Packaging (Windows (64-bit)): at AutomationTool.BuildCommand.Execute() UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Automation.Execute(List1 CommandsToExecute, CaselessDictionary1 Commands) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Automation.Process(String[] Arguments) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Program.MainProc(Object Param) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.InternalUtils.RunSingleInstance(Func2 Main, Object Param)
UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Program.Main()
UATHelper: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=5 (5)
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults:Error: Error Unknown Error|

This is the error I get when I try to package a project for Windows (64-bit)
What can I do to fix it. I am fairly new to Unreal Engine so I will need more help than most people.