JIRA Pie Chart Gadget Doesn't Display For Anonymous Users

2013-05-30 13:30:43.500083500 2013-05-30 13:30:43,498 TP-Processor12 ERROR anonymous 810x515x1 y4o4g1 12.250.157.102,131.103.29.65 /rest/gadget/1.0/piechart/generate [common.error.jersey.ThrowableExceptionMapper] Uncaught exception thrown by REST service
2013-05-30 13:30:43.500086500 java.lang.NullPointerException
2013-05-30 13:30:43.500086500 	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)
2013-05-30 13:30:43.500087500 	at com.atlassian.jira.charts.piechart.PieChartUrlGeneratorFactory.<init>(PieChartUrlGeneratorFactory.java:41)
2013-05-30 13:30:43.500097500 	at com.atlassian.jira.charts.PieChart.generateChart(PieChart.java:89)
2013-05-30 13:30:43.500098500 	at com.atlassian.jira.charts.DefaultChartFactory.generatePieChart(DefaultChartFactory.java:91)
2013-05-30 13:30:43.500099500 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-05-30 13:30:43.500099500 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
2013-05-30 13:30:43.500101500 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
2013-05-30 13:30:43.500102500 	at java.lang.reflect.Method.invoke(Method.java:597)
2013-05-30 13:30:43.500103500 	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)
2013-05-30 13:30:43.500108500 	at $Proxy453.generatePieChart(Unknown Source)
2013-05-30 13:30:43.500109500 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-05-30 13:30:43.500109500 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
2013-05-30 13:30:43.500110500 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
2013-05-30 13:30:43.500113500 	at java.lang.reflect.Method.invoke(Method.java:597)
2013-05-30 13:30:43.500113500 	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)

    public PieChartUrlGeneratorFactory(SearchService searchService, ApplicationProperties applicationProperties, SearchRequestAppender searchRequestAppender, User remoteUser, SearchRequest baseSearchRequest)
    {
        this.searchService = Assertions.notNull(searchService);
        this.searchRequestAppender = Assertions.notNull(searchRequestAppender);
        this.remoteUser = Assertions.notNull(remoteUser);                          <------ null pointer is here
        this.baseSearchRequest = Assertions.notNull(baseSearchRequest);
        velocityRequestContext = new DefaultVelocityRequestContextFactory(applicationProperties).getJiraVelocityRequestContext();
    }