Status Code: 500

Exception:
Stacktrace:
java.lang.RuntimeException: Failed to serialize hudson.model.Project#buildWrappers for class hudson.model.FreeStyleProject
	at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:164)
	at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:135)
	at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:130)
	at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:120)
	at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:94)
	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:78)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:63)
	at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:98)
	at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:38)
	at com.thoughtworks.xstream.XStream.marshal(XStream.java:840)
	at com.thoughtworks.xstream.XStream.marshal(XStream.java:829)
	at com.thoughtworks.xstream.XStream.toXML(XStream.java:804)
	at hudson.XmlFile.write(XmlFile.java:165)
	at hudson.model.AbstractItem.save(AbstractItem.java:220)
	at hudson.model.Job.save(Job.java:167)
	at hudson.model.AbstractProject.setScm(AbstractProject.java:1206)
	at hudson.model.AbstractProject.submit(AbstractProject.java:1505)
	at hudson.model.Project.submit(Project.java:191)
	at hudson.model.FreeStyleProject.submit(FreeStyleProject.java:97)
	at hudson.model.Job.doConfigSubmit(Job.java:1051)
	at hudson.model.AbstractProject.doConfigSubmit(AbstractProject.java:555)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:235)
	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:116)
	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:57)
	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:75)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:525)
	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:181)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:525)
	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:181)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:525)
	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:181)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:525)
	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:181)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:525)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:441)
	at org.kohsuke.stapler.Stapler.service(Stapler.java:123)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
	at winstone.ServletConfiguration.execute(ServletConfiguration.java:249)
	at winstone.RequestDispatcher.forward(RequestDispatcher.java:335)
	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)
	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)
	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
	at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
	at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
	at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
	at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
	at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.RuntimeException: Failed to serialize hudson.plugins.envfile.EnvFileBuildWrapper#buildListner for class hudson.plugins.envfile.EnvFileBuildWrapper
	at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:164)
	at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:135)
	at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:130)
	at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:120)
	at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:94)
	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:78)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:63)
	at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64)
	at hudson.util.DescribableList$ConverterImpl.marshal(DescribableList.java:228)
	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:78)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:63)
	at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:172)
	at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:160)
	... 65 more
Caused by: com.thoughtworks.xstream.converters.ConversionException: Could not call hudson.model.StreamBuildListener.writeObject() : Could not call hudson.remoting.RemoteOutputStream.writeObject() : null
---- Debugging information ----
message             : Could not call hudson.remoting.RemoteOutputStream.writeObject()
cause-exception     : java.lang.NullPointerException
cause-message       : null
-------------------------------
message             : Could not call hudson.model.StreamBuildListener.writeObject()
cause-exception     : com.thoughtworks.xstream.converters.ConversionException
cause-message       : Could not call hudson.remoting.RemoteOutputStream.writeObject() : null
-------------------------------
	at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callWriteObject(SerializationMethodInvoker.java:104)
	at com.thoughtworks.xstream.converters.reflection.SerializableConverter.doMarshal(SerializableConverter.java:215)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:58)
	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:78)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:63)
	at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:172)
	at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:160)
	... 79 more
Caused by: com.thoughtworks.xstream.converters.ConversionException: Could not call hudson.remoting.RemoteOutputStream.writeObject() : null
---- Debugging information ----
message             : Could not call hudson.remoting.RemoteOutputStream.writeObject()
cause-exception     : java.lang.NullPointerException
cause-message       : null
-------------------------------
	at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callWriteObject(SerializationMethodInvoker.java:104)
	at com.thoughtworks.xstream.converters.reflection.SerializableConverter.doMarshal(SerializableConverter.java:215)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:58)
	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:68)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:78)
	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:63)
	at com.thoughtworks.xstream.converters.reflection.SerializableConverter$1.writeToStream(SerializableConverter.java:104)
	at com.thoughtworks.xstream.core.util.CustomObjectOutputStream.writeObjectOverride(CustomObjectOutputStream.java:84)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:322)
	at hudson.util.StreamTaskListener.writeObject(StreamTaskListener.java:161)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callWriteObject(SerializationMethodInvoker.java:100)
	... 86 more
Caused by: java.lang.NullPointerException
	at hudson.remoting.RemoteOutputStream.writeObject(RemoteOutputStream.java:82)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.thoughtworks.xstream.converters.reflection.SerializationMethodInvoker.callWriteObject(SerializationMethodInvoker.java:100)
	... 100 more


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