Packaged game problems

Hi,
I wrote game that I’m able to play editor and want to package it now. So, I went to the package options and chose windows (64bit, my pc platform).The packaging was successful but the game crashes on launch giving the error-
“Assertion failed: ModularFeature != nullptr”

As an alternative I created a stagedBuild for my pc. When I launch that, the game works perfectly. I read something that alludes to a staged build being used to create package the game. So, if the staged build works, shouldn’t the packaged build also be working?

Thanks,

Sounds like you have unhandled exceptions ( like empty references ) happening in your project.

If you run it in editor and then look at the message log, do you see lots of warnings and errors?