When the getInstance() method is called, occurs an error in the advice, but pointcut uses the clause "call". What it is made a mistake?

 <bind pointcut="call(* controllers.HealthWatcherFacade->getInstance())">
 <advice aspect="aspects.distribution.HealthWatcherClientSideAspect" name="aroundFacadeLocalCalls"/>
 </bind>

 public Object aroundFacadeLocalCalls(MethodInvocation invocation) {
 System.out.println("aroundFacadeLocalCalls");

 Object obj = null;
/*
 Object[] args = invocation.getArguments();
 String methodName = invocation.getMethod().getName();
 obj = MethodExecution.invoke(this.getRemoteFacade(), methodName, args);*/
 return obj;

 }

error:


javax.servlet.ServletException: gui.servlets.ServletLogin_1_MByMInvocation
 gui.servlets.ServletLogin.init(ServletLogin.java:44)
 org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 java.lang.Thread.run(Thread.java:595)

 public void init(ServletConfig config) throws ServletException {

 try {

 healthWatcher = HealthWatcherFacade.getInstance();


 } catch (Exception e) {

 throw new ServletException(e.getMessage());

 }

 }