How do I find out where the page loading fails in my jsf page?

Question

I'm trying to migrate an application from wildfly 9.0.1 to wildfly 10.1 and when I try to access the page I get this error.

The only component I could think of in my page related to it is a selectManyCheckbox maybe but I can't find anything that tries to render an "enable" string.

Answer 1

As it turns out it was a property set in my web.xml to blame:

<context-param>
    <param-name>org.richfaces.enableControlSkinning</param-name>
    <param-value>enable</param-value>
</context-param>