Upgrade to BuildSettingsVersion.V4

Hey ViaCognita,
Your Target.cs file should look like this:

public class MyProjectEditorTarget : TargetRules
{
    public MyProjectEditorTarget(TargetInfo Target) : base(Target)
    {
        Type = TargetType.Editor;
        ExtraModuleNames.AddRange(new string[] { "MyProject" });

        // Update build settings
        DefaultBuildSettings = BuildSettingsVersion.Latest;

        // Update include order version
        IncludeOrderVersion = EngineIncludeOrderVersion.Latest;
    }
}

Make sure you apply this config on both the Editor and Game Target.cs files.
Anyway that is just a warning and you can compile fine, even some Editor targets aren’t using the latest BuildSettings, but if you want to use the latest build settings, just use this.
Keep in mind that after you add these changes you’ll probably find many errors to fix inside your project!

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