Click on the last word in the error on the right, that is a link, and it will take you to the offending node.
Whatever you think, you are giving that an empty reference. IE, a reference that is not actually pointing at anything.
Click on the last word in the error on the right, that is a link, and it will take you to the offending node.
Whatever you think, you are giving that an empty reference. IE, a reference that is not actually pointing at anything.