I created DB for one website and everything was working fine. For some reasons, I had to downgrade from .Net Core 6 to .Net 5 and now I'm getting errors in migration files. Screenshot of errors

How to solve this problem?

CodePudding user response：

In EF Core 6, there are overloads for both Int32 and Int64 parameters of the UseIdentityColumns method. In EF Core 5, there is only one for Int32. So as mentioned in the comments, you need to change 1L to simply 1.