Exception raised during rendering: com.android.layoutlib.bridge.MockView cannot be cast to android.view.ViewGroup

Exception details are logged in Window > Show View > Error Log

The following classes could not be instantiated:

- android.support.v7.widget.GridLayout (Open Class, Show Error Log)

See the Error Log (Window > Show View) for more details.


이렇게 에러가 뜨면서
갑자기
화면이 안보이는데 어떻게 해결해야 하나요 ㅠㅠㅠ
고수님들 도와주세요 ㅠㅠ