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Stack trace
java.lang.RuntimeException: Unexpected exception while serving JSON

    at com.cloudbees.workflow.util.ServeJson$Processor.invoke(ServeJson.java:34)

    at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)

    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:167)

    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:100)

    at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:124)

    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)

    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)

    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)

    at org.kohsuke.stapler.MetaClass$11.dispatch(MetaClass.java:380)

    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)

    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)

    at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:233)

    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)

    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)

    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)

    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)

    at org.kohsuke.stapler.Stapler.service(Stapler.java:238)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)

    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)

    at com.smartcodeltd.jenkinsci.plugin.assetbundler.filters.LessCSS.doFilter(LessCSS.java:47)

    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)

    at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:58)

    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)

    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:49)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)

    at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)

    at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)

    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)

    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

    at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

    at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

    at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)

    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)

    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)

    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:553)

    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)

    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)

    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)

    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)

    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)

    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)

    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)

    at org.eclipse.jetty.server.Server.handle(Server.java:499)

    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)

    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)

    at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)

    at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

    at java.lang.Thread.run(Unknown Source)

Caused by: java.lang.reflect.InvocationTargetException

    at sun.reflect.GeneratedMethodAccessor1110.invoke(Unknown Source)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

    at java.lang.reflect.Method.invoke(Unknown Source)

    at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:324)

    at com.cloudbees.workflow.util.ServeJson$Processor.invoke(ServeJson.java:30)

    ... 71 more

Caused by: java.lang.IllegalStateException: Could not load matching start node: java.io.IOException: java.util.concurrent.ExecutionException: java.io.IOException: failed to load flow node from D:\Jenkins\jobs\stability_post_nightly1\builds\212\workflow\4.xml: <?xml version='1.0' encoding='UTF-8'?>

<org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage_-Tag plugin="workflow-support@2.10">

  <node class="org.jenkinsci.plugins.workflow.cps.nodes.StepStartNode" plugin="workflow-cps@2.23">

    <parentIds>

      <string>3</string>

    </parentIds>

    <id>4</id>

    <descriptorId>org.jenkinsci.plugins.workflow.support.steps.ExecutorStep</descriptorId>

  </node>

  <actions>

    <org.jenkinsci.plugins.workflow.support.actions.LogActionImpl>

      <charset>windows-1255</charset>

    </org.jenkinsci.plugins.workflow.support.actions.LogActionImpl>

    <org.jenkinsci.plugins.workflow.support.actions.WorkspaceActionImpl>

      <node></node>

      <path>D:\Jenkins\jobs\stability_post_nightly1\workspace</path>

      <labels class="sorted-set"/>

    </org.jenkinsci.plugins.workflow.support.actions.WorkspaceActionImpl>

    <org.jenkinsci.plugins.workflow.actions.TimingAction plugin="workflow-api@2.5">

      <startTime>1480327837976</startTime>

    </org.jenkinsci.plugins.workflow.actions.TimingAction>

  </actions>

</org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage_-Tag>

    at org.jenkinsci.plugins.workflow.graph.BlockEndNode.getStartNode(BlockEndNode.java:68)

    at org.jenkinsci.plugins.workflow.graphanalysis.ForkScanner.isParallelEnd(ForkScanner.java:148)

    at org.jenkinsci.plugins.workflow.graphanalysis.ForkScanner.next(ForkScanner.java:513)

    at org.jenkinsci.plugins.workflow.graphanalysis.AbstractFlowScanner.next(AbstractFlowScanner.java:211)

    at org.jenkinsci.plugins.workflow.graphanalysis.ForkScanner.next(ForkScanner.java:489)

    at org.jenkinsci.plugins.workflow.graphanalysis.ForkScanner.visitSimpleChunks(ForkScanner.java:562)

    at org.jenkinsci.plugins.workflow.graphanalysis.ForkScanner.visitSimpleChunks(ForkScanner.java:551)

    at com.cloudbees.workflow.rest.external.RunExt.createNew(RunExt.java:318)

    at com.cloudbees.workflow.rest.external.RunExt.create(RunExt.java:306)

    at com.cloudbees.workflow.rest.external.JobExt.create(JobExt.java:131)

    at com.cloudbees.workflow.rest.endpoints.JobAPI.doRuns(JobAPI.java:72)

    ... 76 more