Unable to create installed build with iOS support from PC

BuildGraph.BuildAllNodes: ****** [4/16] Compile UnrealHeaderTool Mac
BuildGraph.BuildAllNodes:
TempStorage.ReadFileList: Reading local file list from D:\Builds\GitHub\4.15\4.1
5.1\Engine\Saved\BuildGraph\Update Version Files\Tag-Update Version Files.xml
CommandUtils.Run: Run: C:\Program Files (x86)\MSBuild\14.0\bin\MSBuild.exe D:/Bu
ilds/GitHub/4.15/4.15.1/Engine/Source/Programs/UnrealBuildTool/UnrealBuildTool.c
sproj /verbosity:minimal /nologo /target:Rebuild /property:Configuration=Develop
ment /property:Platform=AnyCPU
MSBuild:   DotNETUtilities -> D:\Builds\GitHub\4.15\4.15.1\Engine\Binaries\DotNE
T\DotNETUtilities.dll
MSBuild:   UnrealBuildTool -> D:\Builds\GitHub\4.15\4.15.1\Engine\Binaries\DotNE
T\UnrealBuildTool.exe
CommandUtils.Run: Run: Took 1.059s to run MSBuild.exe, ExitCode=0
CommandUtils.Run: Run: D:\Builds\GitHub\4.15\4.15.1\Engine\Binaries\DotNET\Unrea
lBuildTool.exe UnrealHeaderTool Mac Development  -nobuilduht -precompile -noxge
-NoHotReload
UnrealBuildTool: Picking the default remote server
UnrealBuildTool: Remote compiling requires a server name. Use the editor (Projec
t Settings, IOS) to set up your remote compilation settings.
UnrealBuildTool: Doing xcode-select --print-path
UnrealBuildTool: ERROR: Failed to start local process for action ("Cannot start
process because a file name has not been provided."):  -o BatchMode=yes  ${CURRE
NT_USER}@ "cd \"/\" && xcode-select --print-path"
CommandUtils.Run: Run: Took 1.711s to run UnrealBuildTool.exe, ExitCode=5
Node.Build: Failed to execute task.
Program.Main: AutomationTool exiting with ExitCode=1 (Error_Unknown)
BUILD FAILED

 BuildGraph.BuildAllNodes: ****** [4/16] Compile UnrealHeaderTool Mac
 BuildGraph.BuildAllNodes:
 TempStorage.ReadFileList: Reading local file list from C:\UE4\Engine\Saved\BuildGraph\Update Version Files\Tag-Update Version Files.xml
 CommandUtils.Run: Run: C:\Program Files (x86)\MSBuild\14.0\bin\MSBuild.exe C:/UE4/Engine/Source/Programs/UnrealBuildTool/UnrealBuildTool.csproj /verbosity:minimal /nologo /target:Rebuild /property:Configuration=Development /property:Platform=AnyCPU
 MSBuild:   DotNETUtilities -> C:\UE4\Engine\Binaries\DotNET\DotNETUtilities.dll
 MSBuild:   UnrealBuildTool -> C:\UE4\Engine\Binaries\DotNET\UnrealBuildTool.exe
 CommandUtils.Run: Run: Took 0.9766373s to run MSBuild.exe, ExitCode=0
 CommandUtils.Run: Run: C:\UE4\Engine\Binaries\DotNET\UnrealBuildTool.exe UnrealHeaderTool Mac Development  -nobuilduht -precompile -noxge -NoHotReload -ignorejunk
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Failed to connect to UnrealRemoteTool running on .
 UnrealBuildTool: Triggered an exception while looking for SDK directory in Xcode.app
 UnrealBuildTool: System.NullReferenceException: Object reference not set to an instance of an object.
 UnrealBuildTool:    at UnrealBuildTool.AppleToolChainSettings.SelectSDK(String BaseSDKDir, String OSPrefix, String& PlatformSDKVersion, Boolean bVerbose) in C:\UE4\Engine\Source\Programs\UnrealBuildTool\ToolChain\AppleToolChain.cs:line 94
 UnrealBuildTool: ERROR: System.FormatException: Input string was not in a correct format.
 UnrealBuildTool:    at System.Number.ParseSingle(String value, NumberStyles options, NumberFormatInfo numfmt)
 UnrealBuildTool:    at System.Single.Parse(String s, IFormatProvider provider)
 UnrealBuildTool:    at UnrealBuildTool.MacToolChainSettings..ctor(Boolean bVerbose) in C:\UE4\Engine\Source\Programs\UnrealBuildTool\Mac\MacToolChain.cs:line 62
 UnrealBuildTool:    at UnrealBuildTool.MacToolChain.<>c.<.cctor>b__49_0() in C:\UE4\Engine\Source\Programs\UnrealBuildTool\Mac\MacToolChain.cs:line 73
 UnrealBuildTool:    at System.Lazy`1.CreateValue()
 UnrealBuildTool:    at System.Lazy`1.LazyInitValue()
 UnrealBuildTool:    at UnrealBuildTool.MacToolChain.get_Settings() in C:\UE4\Engine\Source\Programs\UnrealBuildTool\Mac\MacToolChain.cs:line 77
 UnrealBuildTool:    at UnrealBuildTool.MacPlatform.ValidateTarget(TargetRules Target) in C:\UE4\Engine\Source\Programs\UnrealBuildTool\Mac\UEBuildMac.cs:line 106
 UnrealBuildTool:    at UnrealBuildTool.UEBuildTarget.CreateTarget(TargetDescriptor Desc, String[] Arguments, Boolean bCompilingSingleFile) in C:\UE4\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 844
 UnrealBuildTool:    at UnrealBuildTool.UnrealBuildTool.RunUBT(BuildConfiguration BuildConfiguration, String[] Arguments, FileReference ProjectFile) in C:\UE4\Engine\Source\Programs\UnrealBuildTool\System\UnrealBuildTool.cs:line 1274
 CommandUtils.Run: Run: Took 13.258692s to run UnrealBuildTool.exe, ExitCode=5
 Node.Build: Failed to execute task.
 Program.Main: AutomationTool exiting with ExitCode=1 (Error_Unknown)
 BUILD FAILED