I tried to duplicate a widget and now I can’t use wordpress. Get the error:
Fatal error: is_callable() [function.is-callable]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "MCW_Book" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in C:\xampp\htdocs\wordpress\wp-includes\widgets.php on line 634
Please, how would I fix this?
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