Line 178: [2017.07.13-22.58.30:770] 0]LogOutputDevice:Error: Ensure condition failed: ParentNode [File:\Build++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Engine\Private\SimpleConstructionScript.cpp] [Line: 872]
This is the error I was referencing in the title. What does it mean? How can I fix it?