I'm getting this error:
onPrepareOptionsMenu Menu in android.support.v4.app.Fragment clashes with onPrepareOptions Menu Menu in android.app.Activity attemping to use incompatible return type.
It's difficult to help without you posting the .code. In the image you posted, your class is inheriting from fragment and from AppCompatActivity and this is not possible because in Java there is no multiple inheritance. Put yourself in the implementation of the method with error so we can help you.