Hello, I have to set and get a user name in my web-application. I use a xsp-session and followed the sample from "Cocoon Developer's handbook : using content logic XSP" about authentification. But if I write exaclty the same pages, I get this error: "org.apache.cocoon.ProcessingException: Exception in ServerPagesGenerator.generate(): java.lang.NullPointerException" But why? I checked the "<session:set-attribute name="user"><xsp:expr>user</xsp:expr></session:set-attribute>" line, and it seems correct. The string user is not null. So why do I get an error????
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