URGENT Game Won’t Open During Game Jam

I am in the middle of a game jam and I usually use Unreal Blueprinting to get my work done, however I’m implementing loot locker leaderboards, which needed me to edit some code.
After a few more hours of work, I left the editor. When I came back the game refuses to open due to “Missing Modules”
I understand that this is a common issue but I am unsure where to start on fixing it.
I’ve been told I need to find something in the logs but I don’t understand half this stuff.
I can give any information needed but please help as soon as possible as I have less than 24 hours left to fix this issue.
I’m running 5.3