Newest thanks a lot for your answer.
I just solve the problem : )
I was migrate all maps to new empty project. Then i realized all the struct errors begin after migrate.
In Bluepirnts which gives errors, i delete all sturct variables then add then same ones again. And it fix the errors.
after few other fixes, Now i have 0 Errors and 300 warnings. : )
I am working on that wornings as well ^^
Thanks again