type Exception report
message Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#lists.size(songs) > 9" (songs:21)
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#lists.size(songs) > 9" (songs:21) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
root cause
org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#lists.size(songs) > 9" (songs:21) org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:161) org.thymeleaf.standard.expression.VariableExpression.executeVariable(VariableExpression.java:154) org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:59) org.thymeleaf.standard.expression.Expression.execute(Expression.java:103) org.thymeleaf.standard.expression.Expression.execute(Expression.java:133) org.thymeleaf.standard.expression.Expression.execute(Expression.java:120) org.thymeleaf.standard.processor.attr.AbstractStandardConditionalVisibilityAttrProcessor.isVisible(AbstractStandardConditionalVisibilityAttrProcessor.java:66) org.thymeleaf.processor.attr.AbstractConditionalVisibilityAttrProcessor.processAttribute(AbstractConditionalVisibilityAttrProcessor.java:59) org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87) org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212) org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017) org.thymeleaf.dom.Node.processNode(Node.java:972) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.Document.process(Document.java:93) org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1155) org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060) org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011) org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335) org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1282) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
root cause
java.lang.IllegalArgumentException: Cannot get list size of null org.thymeleaf.util.Validate.notNull(Validate.java:37) org.thymeleaf.util.ListUtils.size(ListUtils.java:68) org.thymeleaf.expression.Lists.size(Lists.java:52) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:113) org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:129) org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:49) org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:347) org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88) org.springframework.expression.spel.ast.OpGT.getValueInternal(OpGT.java:47) org.springframework.expression.spel.ast.OpGT.getValueInternal(OpGT.java:37) org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120) org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:267) org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:139) org.thymeleaf.standard.expression.VariableExpression.executeVariable(VariableExpression.java:154) org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:59) org.thymeleaf.standard.expression.Expression.execute(Expression.java:103) org.thymeleaf.standard.expression.Expression.execute(Expression.java:133) org.thymeleaf.standard.expression.Expression.execute(Expression.java:120) org.thymeleaf.standard.processor.attr.AbstractStandardConditionalVisibilityAttrProcessor.isVisible(AbstractStandardConditionalVisibilityAttrProcessor.java:66) org.thymeleaf.processor.attr.AbstractConditionalVisibilityAttrProcessor.processAttribute(AbstractConditionalVisibilityAttrProcessor.java:59) org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87) org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212) org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017) org.thymeleaf.dom.Node.processNode(Node.java:972) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) org.thymeleaf.dom.Node.processNode(Node.java:990) org.thymeleaf.dom.Document.process(Document.java:93) org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1155) org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060) org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011) org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335) org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1282) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
note The full stack trace of the root cause is available in the Apache Tomcat/8.5.11 logs.