Null Pointer exception in request handler

[kulwantbughipura]

Hello,
This is the stacktrace

2016-02-17 18:28:58,022 |0.0.0.0-8080-exec-87 |ControlServlet                |E| Including errorPage: /error/error.jsp
2016-02-17 18:28:58,316 |0.0.0.0-8080-exec-64 |ControlServlet                |E| Error in request handler:
java.lang.NullPointerException
        at javolution.util.FastMap$Entry.access$000(FastMap.java:1530) ~[javolution-5.4.3.jar:5.4.3]
        at javolution.util.FastMap.remove(FastMap.java:732) ~[javolution-5.4.3.jar:5.4.3]
        at javolution.util.FastMap.remove(FastMap.java:697) ~[javolution-5.4.3.jar:5.4.3]
        at org.ofbiz.webapp.control.LoginWorker.getExternalLoginKey(LoginWorker.java:143) ~[ofbiz-webapp.jar:?]
        at org.ofbiz.widget.screen.ScreenRenderer.populateContextForRequest(ScreenRenderer.java:258) ~[ofbiz-widget.jar:?]
        at org.ofbiz.widget.screen.ScreenRenderer.populateContextForRequest(ScreenRenderer.java:187) ~[ofbiz-widget.jar:?]
        at org.ofbiz.widget.screen.MacroScreenViewHandler.render(MacroScreenViewHandler.java:97) ~[ofbiz-widget.jar:?]
        at org.ofbiz.webapp.control.RequestHandler.renderView(RequestHandler.java:917) ~[ofbiz-webapp.jar:?]
        at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:615) ~[ofbiz-webapp.jar:?]
        at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:575) ~[ofbiz-webapp.jar:?]
        at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:575) ~[ofbiz-webapp.jar:?]
        at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:211) [ofbiz-webapp.jar:?]
        at org.ofbiz.webapp.control.ControlServlet.doPost(ControlServlet.java:90) [ofbiz-webapp.jar:?]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) [servlet-api-3.0.jar:?]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api-3.0.jar:?]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.ofbiz.webapp.control.ContextFilter.doFilter(ContextFilter.java:317) [ofbiz-webapp.jar:?]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) [tomcat-7.0.59-catalina.jar:7.0.59]
        at com.googlecode.psiprobe.Tomcat70AgentValve.invoke(Tomcat70AgentValve.java:38) [tomcat70adaptor-2.3.0.jar:2.3.0]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) [tomcat-7.0.59-catalina.jar:7.0.59]
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074) [tomcat-7.0.59-tomcat-coyote.jar:7.0.59]
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) [tomcat-7.0.59-tomcat-coyote.jar:7.0.59]
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314) [tomcat-7.0.59-tomcat-coyote.jar:7.0.59]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_45]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_45]
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-7.0.59-tomcat-coyote.jar:7.0.59]

[Ariful Alam]

Hi,
I am getting the same error. Did you find any fix for that?