Hi

I use chrome and when I try to log onto the login site on my schools site I get an error. I can get on by using FIREFOX, but I would really appreciate if I could use chrome. I hope that someone knows how to fix this, and who wants to help me ^^. I have read somthing about chrome and java, and I have enabled somthing under chrome extensions(or somthing), but it didnt solve my problem.
This is what it says when I try to log on the site:

HTTP ERROR 500

Problem accessing /ui/main. Reason:

Server Error
Caused by:

javax.servlet.ServletException: com.vaadin.server.ServiceException: java.lang.NullPointerException
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:352)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder .handle(ServletHolder.java:808)
at org.eclipse.jetty.servlet.ServletHandle r.doHandle(ServletHandler.java:587)
at org.eclipse.jetty.server.handler.Scoped Handler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHand ler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.Sessio nHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.Contex tHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandle r.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.Sessio nHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.Contex tHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.Scoped Handler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.Contex tHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.Handle rWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.ha ndle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection .onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThr eadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThr eadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Unknown Source)
Caused by: com.vaadin.server.ServiceException: java.lang.NullPointerException
at com.vaadin.server.VaadinService.handleE xceptionDuringRequest(VaadinService.java:1463)
at com.vaadin.server.VaadinService.handleR equest(VaadinService.java:1420)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:350)
... 20 more
Caused by: java.lang.NullPointerException
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR.cr eateNewKursist(IndskrivningCTR.java:64)
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR$$FastClassBySpringCGLIB$$96a1284b.invoke()
at org.springframework.cglib.proxy.MethodP roxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.Cglib AopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.Refle ctiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interce ptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interce ptor.TransactionAspectSupport.invokeWit hinTransaction(TransactionAspectSupport.java:267)
at org.springframework.transaction.interce ptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.Refle ctiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.Cglib AopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR$$EnhancerBySpringCGLIB$$e6bfc60e.createNewKursist()
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.id.IDIndskrivningM edAnsøgningComponent.buildPage(IDIndskrivningMedAnsøgningComponent.java:112)
at com.csc.ludus.vaadinWebApps.main.MainAp p.vælgFunktion(MainApp.java:707)
at com.csc.ludus.vaadinWebApps.main.MainAp p.buildMainLayout(MainApp.java:520)
at com.csc.ludus.vaadinWebApps.main.MainAp p.init(MainApp.java:189)
at com.vaadin.ui.UI.doInit(UI.java:646)
at com.vaadin.server.communication.UIInitH andler.getBrowserDetailsUI(UIInitHandler.java:214)
at com.vaadin.server.communication.UIInitH andler.synchronizedHandleRequest(UIInitHandler.java:74)
at com.vaadin.server.SynchronizedRequestHa ndler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleR equest(VaadinService.java:1408)
... 21 more
Caused by:

com.vaadin.server.ServiceException: java.lang.NullPointerException
at com.vaadin.server.VaadinService.handleE xceptionDuringRequest(VaadinService.java:1463)
at com.vaadin.server.VaadinService.handleR equest(VaadinService.java:1420)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:350)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder .handle(ServletHolder.java:808)
at org.eclipse.jetty.servlet.ServletHandle r.doHandle(ServletHandler.java:587)
at org.eclipse.jetty.server.handler.Scoped Handler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHand ler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.Sessio nHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.Contex tHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandle r.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.Sessio nHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.Contex tHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.Scoped Handler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.Contex tHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.Handle rWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.ha ndle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection .onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThr eadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThr eadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR.cr eateNewKursist(IndskrivningCTR.java:64)
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR$$FastClassBySpringCGLIB$$96a1284b.invoke()
at org.springframework.cglib.proxy.MethodP roxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.Cglib AopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.Refle ctiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interce ptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interce ptor.TransactionAspectSupport.invokeWit hinTransaction(TransactionAspectSupport.java:267)
at org.springframework.transaction.interce ptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.Refle ctiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.Cglib AopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR$$EnhancerBySpringCGLIB$$e6bfc60e.createNewKursist()
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.id.IDIndskrivningM edAnsøgningComponent.buildPage(IDIndskrivningMedAnsøgningComponent.java:112)
at com.csc.ludus.vaadinWebApps.main.MainAp p.vælgFunktion(MainApp.java:707)
at com.csc.ludus.vaadinWebApps.main.MainAp p.buildMainLayout(MainApp.java:520)
at com.csc.ludus.vaadinWebApps.main.MainAp p.init(MainApp.java:189)
at com.vaadin.ui.UI.doInit(UI.java:646)
at com.vaadin.server.communication.UIInitH andler.getBrowserDetailsUI(UIInitHandler.java:214)
at com.vaadin.server.communication.UIInitH andler.synchronizedHandleRequest(UIInitHandler.java:74)
at com.vaadin.server.SynchronizedRequestHa ndler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleR equest(VaadinService.java:1408)
... 21 more
Caused by:

java.lang.NullPointerException
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR.cr eateNewKursist(IndskrivningCTR.java:64)
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR$$FastClassBySpringCGLIB$$96a1284b.invoke()
at org.springframework.cglib.proxy.MethodP roxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.Cglib AopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.Refle ctiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interce ptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interce ptor.TransactionAspectSupport.invokeWit hinTransaction(TransactionAspectSupport.java:267)
at org.springframework.transaction.interce ptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.Refle ctiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.Cglib AopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.IndskrivningCTR$$EnhancerBySpringCGLIB$$e6bfc60e.createNewKursist()
at com.csc.ludus.vaadinWebApps.nextgen.fun ktioner.indskrivning.id.IDIndskrivningM edAnsøgningComponent.buildPage(IDIndskrivningMedAnsøgningComponent.java:112)
at com.csc.ludus.vaadinWebApps.main.MainAp p.vælgFunktion(MainApp.java:707)
at com.csc.ludus.vaadinWebApps.main.MainAp p.buildMainLayout(MainApp.java:520)
at com.csc.ludus.vaadinWebApps.main.MainAp p.init(MainApp.java:189)
at com.vaadin.ui.UI.doInit(UI.java:646)
at com.vaadin.server.communication.UIInitH andler.getBrowserDetailsUI(UIInitHandler.java:214)
at com.vaadin.server.communication.UIInitH andler.synchronizedHandleRequest(UIInitHandler.java:74)
at com.vaadin.server.SynchronizedRequestHa ndler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleR equest(VaadinService.java:1408)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:350)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder .handle(ServletHolder.java:808)
at org.eclipse.jetty.servlet.ServletHandle r.doHandle(ServletHandler.java:587)
at org.eclipse.jetty.server.handler.Scoped Handler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHand ler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.Sessio nHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.Contex tHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandle r.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.Sessio nHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.Contex tHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.Scoped Handler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.Contex tHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.Handle rWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.ha ndle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection .onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThr eadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThr eadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Unknown Source)
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Have you TRIED dumping browser CACHE as linked here: http://www.askmefast.com/HTTP_Error_500_with_Google_chrome_how_can_I_fix_it-qna5809915.htmlThank you so much! It worked.'

I dont know how to mark it solved, but it is ^^