Description
Error trace:
java.lang.NullPointerException
at org.apache.wicket.pageStore.AsynchronousDataStore.removeData(AsynchronousDataStore.java:132)
at org.apache.wicket.pageStore.AsynchronousDataStoreTest$RemovePageInSessionTask.r(AsynchronousDataStoreTest.java:132)
at org.apache.wicket.pageStore.AsynchronousDataStoreTest$AbstractTask.run(AsynchronousDataStoreTest.java:86)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)