Packaged project crash on startup

I have almost finished my project but when I package it, and run the packaged game it crashes at startup.

There is a splash screen where UE logo shows up, and then the main menu level has to show up but it goes to desktop after a few seconds of loading the level.

I can run the game as standalone game from the editor.

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Ok I fixed it. In the level blueprint I had set a timeline to make the sound effect group fade in from 0 to 1. Deleting those nodes did the trick.