java.lang.ClassCastException: com.sun.faces.facelets.compiler.UIInstructions cannot be cast to org.primefaces.model.menu.MenuElement

Question

This morning I came in to my office and the first thing I saw: my company site crashed. Because of me I think.

Now I tried for one hour and a half to fix this, but I fou

Answer 1

A quick google of the error message shows

PanelMenu can't be rendered when it's sub elements contain comments. a html alert dialog will be shown on which written "UI Layout Initialization Error..." and on the server an exception is thrown "java.lang.ClassCastException:com.sun.faces.facelets.compiler.UIInstructions cannot be cast to org.primefaces.model.menu.MenuElement".