statusCode: 500,
   reasonPhrase: "Internal Server Error",
   faultMessage: "Cannot invoke "com.yoochoose.recommender.coordinator.SamaraRecommendation.getOriginItems()" because "recommendation" is null",
   faultDetail: {
      message: "Cannot invoke "com.yoochoose.recommender.coordinator.SamaraRecommendation.getOriginItems()" because "recommendation" is null"
   },
   faultCode: "internalServerError",
   debugCause: {
      message: "Cannot invoke "com.yoochoose.recommender.coordinator.SamaraRecommendation.getOriginItems()" because "recommendation" is null",
      stackTrace: [
         "com.yoochoose.recocontroller.RecommendationControllerV2.createRecommendationResponseV2(RecommendationControllerV2.java:242)",
         "com.yoochoose.recocontroller.RecommendationControllerV2.getRecos(RecommendationControllerV2.java:201)",
         "com.yoochoose.recocontroller.RecommendationControllerV2.getRecommendations(RecommendationControllerV2.java:146)",
         "jdk.internal.reflect.GeneratedMethodAccessor169.invoke(Unknown Source)",
         "java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)",
         "java.base/java.lang.reflect.Method.invoke(Method.java:567)",
         "org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)",
         "org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150)",
         "org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)",
         "org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)",
         "org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)",
         "org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)",
         "org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)",
         "org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)",
         "org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)",
         "org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)",
         "javax.servlet.http.HttpServlet.service(HttpServlet.java:655)",
         "org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)",
         "javax.servlet.http.HttpServlet.service(HttpServlet.java:764)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "com.yoochoose.services.security.SecurityContext.doAuthentication(SecurityContext.java:296)",
         "com.yoochoose.services.security.SecurityContext.doFilter(SecurityContext.java:215)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "com.yoochoose.services.authentication.SessionKillingFilter.doFilter(SessionKillingFilter.java:65)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)",
         "org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)",
         "org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "datadog.trace.instrumentation.springweb.HandlerMappingResourceNameFilter.doFilterInternal(HandlerMappingResourceNameFilter.java:50)",
         "org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:126)",
         "org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:64)",
         "org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:101)",
         "org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)",
         "org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119)",
         "org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)",
         "org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)",
         "org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)",
         "org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)",
         "org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)",
         "org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)",
         "org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)",
         "org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)",
         "org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359)",
         "org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)",
         "org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)",
         "org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889)",
         "org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1735)",
         "org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)",
         "org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)",
         "org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)",
         "org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)",
         "java.base/java.lang.Thread.run(Thread.java:831)"
      ],
      class: "java.lang.NullPointerException"
   }
} 

{
   statusCode: 409,
   reasonPhrase: "Conflict",
   faultMessage: "No models found for scenario [1652.also_clicked2] to fulfill the request. Cause: [also_clicked:CLICKED:EMPTY_CONTEXT]. Provided contexts: [].",
   faultDetail: {
      message: "No models found for scenario [also_clicked2] to fulfill the request. Cause: [also_clicked:EMPTY_CONTEXT]. No context provided.",
      scenarioReferenceCode: "also_clicked2",
      inputTypeId: 49,
      outputTypeId: 49,
      contextItems: null,
      whySkipped: [
         {
            modelReferenceCode: "also_clicked",
            reason: "EMPTY_CONTEXT"
         }
      ]