Travel Failure: Invalid URL - Start Button Failure to Open Level

Please help if you know the answer to this one:

Warning: Travel Failure: [ClientTravelFailure]: Invalid URL: /Game/Levels/MainMenuLevel

I’m getting this message when testing my game on Android and its now starting to be a proper pain.

So when I go from Main menu to Intro level where the intro video is supposed to be, it just refuses to go anywhere.

In editor, however, it works just fine but when testing, it leads to nowhere.

I’ve also tried to include all maps in Project Settings/Packaging/List of maps included in package build

Please see below the blueprints and help if you can

330462-capture.png

Please answer Thanks, S