Critical Description
Steps:
1) login as user with admin rights
2) open Admin->Groups
3) select any group with users
4) select any user, click remove
Result: Exception:
java.lang.IllegalStateException: ServletRequest does not contain multipart content. One possible solution is to explicitly call Form.setMultipart(true), Wicket tries its best to auto-detect multipart forms but there are certain situation where it cannot. at org.apache.wicket.protocol.http.servlet.MultipartServletWebRequestImpl.<init>(MultipartServletWebRequestImpl.java:141) at org.apache.wicket.protocol.http.servlet.MultipartServletWebRequestImpl.<init>(MultipartServletWebRequestImpl.java:96) at org.apache.wicket.protocol.http.servlet.ServletWebRequest.newMultipartWebRequest(ServletWebRequest.java:432) at org.apache.wicket.markup.html.form.Form.handleMultiPart(Form.java:1428) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:746) at com.googlecode.wicket.jquery.ui.widget.dialog.AbstractFormDialog.internalOnClick(AbstractFormDialog.java:215) at com.googlecode.wicket.jquery.ui.widget.dialog.AbstractDialog$1.onClick(AbstractDialog.java:413) at com.googlecode.wicket.jquery.ui.widget.dialog.DialogBehavior.onAjax(DialogBehavior.java:187) at com.googlecode.wicket.jquery.core.ajax.JQueryAjaxBehavior.respond(JQueryAjaxBehavior.java:173) at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:601) at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:301) at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:275) at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:217) at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:203) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:912) at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:283) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:204) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:286) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:84) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)