Xib Custom UIView Error "Forundefinedkey:]: This class isn't key value coding-compliant for the key"

When using Xib to customize the UIView, you need to drag and drop the control into a property to report an error when loading a custom view Viewcontroller

"Forundefinedkey:]: This class isn't key value coding-compliant for the key"

Look for a long time, finally found to be Xib's file ' OWNER's class association error

This location can only be empty when customizing the view !!!

The XIB association class should be set in the view's class,

After modifying the association of the class, the error is resolved.

Xib Custom UIView Error "Forundefinedkey:]: This class isn't key value coding-compliant for the key"