I fixed it. I will explain in case someone is having the same issue.
First I DID NOT found out this myself-I found it in the internet but i’ll share it.
The issue was caused by the programs install directory. When you install the game in its default directory C:Programfiles… and so on … the guy in the other forum explained that this is cause by the length of the string(of the directory path) it is too long for windows to handle. SO the FIX IS simple just reinstall the UE in other directory (for example D:/Unreal engine …)