I also deploy unifiedpush-auth-server.war to WF 11 - Final and I got same error. The war file was inside a distribution package called aerogear-unifiedpush-server-1.1.3.Final-dist.tar.gz . I did the steps of this user-guide : https://aerogear.org/docs/unifiedpush/ups_userguide/index/ .
I also searched around the web to find source codes of auth-server.war but I couldn't find anything. *Is it opensource? *