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java.lang.NoClassDefFoundError: org/xml/sax/ext/Attributes2 at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:509) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1643) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:937) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1372) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1254) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322) at gnu.xml.aelfred2.XmlReader.<init>(XmlReader.java:67) at gnu.xml.aelfred2.JAXPFactory$JaxpParser.<init>(JAXPFactory.java:140) at gnu.xml.aelfred2.JAXPFactory.setFeature(JAXPFactory.java:98) at gnu.xml.dom.JAXPFactory.newDocumentBuilder(JAXPFactory.java:96) at TransitionServlet.getXML(TransitionServlet.java:127) at TransitionServlet.doGet(TransitionServlet.java:60) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)