Compiling Shaders: Freeze

Version: 4.21.2

Hello,
I hope my problem is an easy one cause I would really love a fix till tomorrow (there is a birthday party and I coded a birthday riddle for it. I have already packaged a very simple project before (very small) so the general idea how to do it is not new to me.
I can build lightning, geometry and everything. Map check doesn’t return any errors. I get a lot of warnings in the log (I dont know which ones are relevant and they are sure too many to post them all here but I guess an example might help):
UATHelper: Packaging (Windows (64-bit)): LogUObjectGlobals: Warning: Failed to load ‘/Game/Meshes/Assets/Peripherals/MouseMat/MouseMat3’: Can’t find file for asset ‘/Game/Meshes/Assets/Peripherals/MouseMat/MouseMat3’ while loading NULL.
UATHelper: Packaging (Windows (64-bit)): LogLinker: Warning: Can’t find file ‘/Game/Meshes/Assets/Peripherals/Keyboard/Keyboard2’
UATHelper: Packaging (Windows (64-bit)): LogUObjectGlobals: Warning: Failed to load ‘/Game/Meshes/Assets/Peripherals/Keyboard/Keyboard2’: Can’t find file ‘/Game/Meshes/Assets/Peripherals/Keyboard/Keyboard2’

What happens?
It starts packaging but when it comes to compiling the shaders it stops making progress. Even after long periods of time you can see no change.

Im very willing to give all additional information needed and very happy if someone knows some wizard tricks to get around this problem. I wrapped my head around it for like 3 hours now and I just cant see it. Keep in mind that I am very new to Unreal Engine so it might be a beginner mistake.

What will I do now?
I will copy the project and remove as many files as I can seeing when it packages properly

I have tried the following (not working):
Deleted: Save and Intermediate Folder
Removed files I manually imported into the project (not market place)

Working:
Creating a new sample projekt and building it.

I have:
Checked that Chunks are disabled

Alright I let it run for several hours and now I got an error that it cant package (package failed).
Error log in txt filelink text