Main Menu Widget not working when trying to play the "Standalone" Test

Hey There! I am writing here today because I cannot for the life of me figure out why my Main Menu Blueprint Widget isn’t showing up on the Standalone Test, the map is set to be the map that should open, and it opens to a black screen, it is only that map that is doing it. If anyone can help me with this I would be truly grateful, I have searched everywhere for an answer and nothing I need appears, I really want to test my main menu in a full standalone test to see how my menus react to Fullscreen options!