Compile error, when inherited from UObject child class

Hi everyone!

I am trying to create UOnsetNRT (epic gamess plugin UObject class) child class, but got compile error with "unresolved external symbol" (Yes, plugin class, but my own child class is not in the plugin folder, its in the project folder)

I have changed CoreMinimal.h to Core.h, but the problem still there.

The most interesting thing is in Blueprints it could easily create from UOnsetNRT as blueprint child class… What is problem?