Persistent @Schedule timers fail to find the timeout method on the bean

java.lang.RuntimeException: Unknown timeout method public void com.htu.fizio.impl.SchedulerBean.checkAttendance()

          at org.jboss.as.ejb3.component.singleton.SingletonComponentInstance.invokeTimeoutMethod(SingletonComponentInstance.java:67)

          at org.jboss.as.ejb3.timerservice.SingletonTimedObjectInvokerImpl.callTimeout(SingletonTimedObjectInvokerImpl.java:48)

          at org.jboss.ejb3.timerservice.mk2.task.CalendarTimerTask.callTimeout(CalendarTimerTask.java:73)

          at org.jboss.ejb3.timerservice.mk2.task.TimerTask.run(TimerTask.java:120)

          at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [:1.7.0]

          at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [:1.7.0]

          at java.util.concurrent.FutureTask.run(FutureTask.java:166) [:1.7.0]

          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [:1.7.0]

          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [:1.7.0]

          at java.lang.Thread.run(Thread.java:722) [:1.7.0]