In your project in file “/Config/Windows/WindowsEngine.ini” delete or comment these lines:
[/Script/Engine.Engine] GameEngine=/Script/DisplayCluster.DisplayClusterGameEngine UnrealEdEngine=/Script/DisplayClusterEditor.DisplayClusterEditorEngine GameViewportClientClassName=/Script/DisplayCluster.DisplayClusterViewportClient
Maybe need to remove or comment these lines in “/Config/DefaultEngine.ini”:
[/Script/DisplayClusterEditor.DisplayClusterEditorSettings] bEnabled=True