ExpressionChangedAfterItHasBeenCheckedError Explained

Question

Please explain to me why I keep getting this error: ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked.

Obviously,

Answer 1

I got this error because i was dispatching redux actions in modal and modal was not opened at that time. I was dispatching actions the moment modal component recieve input. So i put setTimeout there in order to make sure that modal is opened and then actions are dipatched.