Can`t create more classes

Ive added new empty actor class to project, and its added ok, then I added one more, and the project is compiles ok, but when I tried to add third class it makes the error, and the projecy dont whant to compile in any way. Ive tried to compile projecy throught Visual Studio but it makes the error to, but when I tried to delete one empty class it compiles ok. It seems like Unreal has limit for classes?)
Here is the error: