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java.lang.NullPointerException: 	at org.kuali.student.enrollment.class2.autogen.controller.ARGUtil.reloadTheCourseOfferingWithAOs_RGs_Clusters(ARGUtil.java:220)	at org.kuali.student.enrollment.class2.autogen.controller.ARGCourseOfferingManagementController.reloadManageCO(ARGCourseOfferingManagementController.java:365)	at org.kuali.student.enrollment.class2.autogen.controller.ARGCourseOfferingManagementController$$FastClassByCGLIB$$b8c6c292.invoke()	at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)	at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)	at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)	at org.kuali.student.enrollment.class2.autogen.controller.ARGCourseOfferingManagementController$$EnhancerByCGLIB$$c10ffd47.reloadManageCO()	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:601)	at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352)	at org.kuali.rice.kew.web.UserLoginFilter.doFilter(UserLoginFilter.java:89)	at org.kuali.rice.kew.web.UserLoginFilter.doFilter(UserLoginFilter.java:77)	at org.kuali.student.common.kitchensink.KitchenSinkUserLoginFilter.doFilter(KitchenSinkUserLoginFilter.java:61)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)	at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:77)	at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:141)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)	at org.kuali.rice.krad.web.filter.HideWebInfFilter.doFilter(HideWebInfFilter.java:68)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.kuali.student.security.filter.AuthenticationGwtRpcFilter.doFilterHttp(AuthenticationGwtRpcFilter.java:54)	at org.kuali.student.security.filter.AuthenticationGwtRpcFilter.doFilter(AuthenticationGwtRpcFilter.java:38)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.kuali.student.security.filter.KSLogoutFilter.doFilterHttp(KSLogoutFilter.java:101)	at org.kuali.student.security.filter.KSLogoutFilter.doFilter(KSLogoutFilter.java:73)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173)	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:480)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247)	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)	at org.eclipse.jetty.server.Server.handle(Server.java:346)	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)	at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)	at java.lang.Thread.run(Thread.java:722)