Паста быстрого приготовления

FreeMarker template error (DEBUG mode; use RETHROW in production!): For "." left-hand operand: Expected a hash, but this has evaluated to a sequence (ArrayList wrapped into f.t.DefaultListAdapter): ==> icon [in template "product.html" at line 36, column 28] ---- FTL stack trace ("~" means nesting-related): - Failed at: #if icon?? && icon.size [in template "product.html" at line 36, column 13] ---- Java stack trace (for programmers): ---- freemarker.core.NonHashException: [... Exception message was already printed; see it above ...] at freemarker.core.Dot._eval(Dot.java:57) at freemarker.core.Expression.eval(Expression.java:101) at freemarker.core.Expression.evalToBoolean(Expression.java:177) at freemarker.core.Expression.evalToBoolean(Expression.java:163) at freemarker.core.AndExpression.evalToBoolean(AndExpression.java:36) at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:48) at freemarker.core.Environment.visit(Environment.java:344) at freemarker.core.Environment.visit(Environment.java:350) at freemarker.core.Environment.process(Environment.java:323) at freemarker.template.Template.process(Template.java:383) at com.xc.iboot.service.impl.WebGenerateServiceImpl.generate(WebGenerateServiceImpl.java:165) at com.xc.iboot.service.impl.WebGenerateServiceImpl.product(WebGenerateServiceImpl.java:79) at com.xc.iboot.service.impl.ContentServiceImpl.s(ContentServiceImpl.java:38) at com.xc.iboot.service.impl.ContentServiceImpl.s(ContentServiceImpl.java:19) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:354) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:716) at com.xc.iboot.service.impl.ContentServiceImpl$$SpringCGLIB$$0.s() at com.xc.iboot.common.BaseController.add(BaseController.java:22) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:255) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:188) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:926) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:831) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:590) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:124) at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:384) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:905) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63) at java.base/java.lang.Thread.run(Unknown Source)