How to solve unity editor freezing at Application.EnterPlayMode in play mode after building?

I was working on a project. I completed it and built it. After building when I opened the game it was working fine, but I wanted to do some changes in my project. So I reopened my project and edited it as I wanted. But when I tried to get in play mode, it is always freezing at Application.EnterPlayMode.

So summarizing the main problem is unity editor freezing at Application.EnterPlayMode after build.

Pls tell me the fix as soon as possible, I have to submit my project!!