Do I need to provision 'UE4Game' to create an installed build on the ios target?

Development Platform & Builds Mobile
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2

Please help me~~

step>
1 download 4.20.3 from git
2 modify Engine\Build\InstalledEngineBuild.xml as like this :

  • HostPlatformOnly : true
  • AllPlatforms : false
  • WithWin64, WithAndroid, WithIOS : true

3.run AutomationTool BuildGraph
4.provision file missing error (why ?? )

Is it impossible to make an installed build for iOS without provision file ?