"Primefaces is not defined" error

At starting with Primefaces, the error "Primefaces is not defined" happens. It's because Primefaces needs h:head JSF tag in the page.

To fix, just do that:

1. How can I fix the "PrimeFaces not found" javascript error? Make sure to have h:head tag in your page.
   

http://www.primefaces.org/faq.html