Hello, 1st packaging of a project of mine I got a fatal error, so I tried using a blank level to find out what was the problem but it sadly didnt changed anything
Oh, if you do not mind restarting, I would restart.
Absolutely.
(Because, like I said, there will be MORE errors that will be found. Unreal stops executing the package when it’s like, “okay, let me not give too much bad news all at once”. It very well may take less time to start over.)
Just make sure to:
ZIP backups of versions of your project that package successfully.
Before adding ANYTHING new into your project, use a “staging” project that will package the new items first to see if they are safe enough to introduce.