Only look at the first excpetion stack trace, and always follow the "cuased by" chain. If you do this, you will see this root cause:
Caused by: java.lang.ClassCastException: org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration
CCE errors typically mean that you have packed within your applicaiton a JAR that JBoss AS already provides. In this case, you packaged the xerces JAR, remove it from your app.