The same problem occurred to me. I could not find solution
Did you solve?
Configurition : Seam 2.2 , JBoss 5.1
javax.el.ELException: org.jboss.seam.RequiredException: @In attribute requires non-null value: authenticator.cacheProvider
I too am having the same issue when I use EhCache. Does anyone have a solution?
Add to your components.xml:
<components xmlns="http://jboss.com/products/seam/components" ... xmlns:cache="http://jboss.com/products/seam/cache" xsi:schemaLocation= "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.1.xsd http://jboss.com/products/seam/cache http://www.jboss.com/products/seam/cache-2.1.xsd"> ... <cache:eh-cache-provider/> ... </components>