java.lang.AbstractMethodError
	at javax.servlet.ServletRequestWrapper.isAsyncStarted(ServletRequestWrapper.java:380)
	at javax.servlet.ServletRequestWrapper.isAsyncStarted(ServletRequestWrapper.java:380)
	at org.apache.catalina.core.ApplicationDispatcher.unwrapRequest(ApplicationDispatcher.java:738)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:428)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:360)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:297)
	at net.paoding.rose.web.portal.impl.WindowTask.run(WindowTask.java:81)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)