Level won't open from main menu?

UPDATE: I moved maps out of my “Maps” folder and into content and now its working? I noticed output log.

LogPlayLevel: Warning: [2019.03.23-04.31.50:565][301]LogNet: Warning: Travel Failure: [InvalidURL]: Invalid URL: /Game/Maps/MainMenu
LogPlayLevel: Warning: [2019.03.23-04.31.50:565][301]LogNet: Warning: Travel Failure: [ClientTravelFailure]: Invalid URL: /Game/Maps/MainMenu