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via Spring JIRA by Keith Donald, 1 year ago
This mapping is required; evaluation of expression 'id' against source of type [class org.springframework.webflow.core.collection.LocalAttributeMap] must return a non-null value
via Spring JIRA by Keith Donald, 2 years ago
This mapping is required; evaluation of expression 'id' against source of type [class org.springframework.webflow.core.collection.LocalAttributeMap] must return a non-null value
org.springframework.binding.mapping.RequiredMappingException: This mapping is required; evaluation of expression 'id' against source of type [class org.springframework.webflow.core.collection.LocalAttributeMap] must return a non-null value	at org.springframework.binding.mapping.Mapping.map(Mapping.java:99)	at org.springframework.binding.mapping.DefaultAttributeMapper.map(DefaultAttributeMapper.java:74)	at org.springframework.webflow.engine.Flow.start(Flow.java:554)	at org.springframework.webflow.engine.impl.RequestControlContextImpl.start(RequestControlContextImpl.java:195)	at org.springframework.webflow.engine.impl.FlowExecutionImpl.start(FlowExecutionImpl.java:189)	at org.springframework.webflow.executor.FlowExecutorImpl.launch(FlowExecutorImpl.java:206)	at org.springframework.webflow.executor.support.FlowRequestHandler.handleFlowRequest(FlowRequestHandler.java:131)	at org.springframework.webflow.executor.mvc.FlowController.handleRequestInternal(FlowController.java:170)	at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)	at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:819)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:754)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:399)	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:354)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)	at java.lang.Thread.run(Thread.java:613)