HTTP Status 500 – Internal Server Error


Type Exception Report

Message Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "offer.category.name" (offer:11)

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "offer.category.name" (offer:11)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
	org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
	org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
	org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
	org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

Root Cause

org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "offer.category.name" (offer:11)
	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.AbstractStandardSingleAttributeModifierAttrProcessor.getTargetAttributeValue(AbstractStandardSingleAttributeModifierAttrProcessor.java:67)
	org.thymeleaf.processor.attr.AbstractSingleAttributeModifierAttrProcessor.getModifiedAttributeValues(AbstractSingleAttributeModifierAttrProcessor.java:59)
	org.thymeleaf.processor.attr.AbstractAttributeModifierAttrProcessor.processAttribute(AbstractAttributeModifierAttrProcessor.java:62)
	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.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:1228)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1011)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
	org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
	org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
	org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
	org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

Root Cause

org.springframework.expression.spel.SpelEvaluationException: EL1007E:(pos 6): Property or field 'category' cannot be found on null
	org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:222)
	org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:93)
	org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:81)
	org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:57)
	org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:87)
	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.AbstractStandardSingleAttributeModifierAttrProcessor.getTargetAttributeValue(AbstractStandardSingleAttributeModifierAttrProcessor.java:67)
	org.thymeleaf.processor.attr.AbstractSingleAttributeModifierAttrProcessor.getModifiedAttributeValues(AbstractSingleAttributeModifierAttrProcessor.java:59)
	org.thymeleaf.processor.attr.AbstractAttributeModifierAttrProcessor.processAttribute(AbstractAttributeModifierAttrProcessor.java:62)
	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.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:1228)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1011)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
	org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
	org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
	org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
	org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/9.0.31 (Debian)