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org.python.core.PyException: null	at org.python.core.Py.AttributeError(Py.java:205)	at org.python.core.PyType.noAttributeError(PyType.java:1883)	at org.python.core.PyObject.__getattr__(PyObject.java:1008)	at org.python.pycode._pyx0.prepareForStep$9(:185)	at org.python.pycode._pyx0.call_function()	at org.python.core.PyTableCode.call(PyTableCode.java:167)	at org.python.core.PyBaseCode.call(PyBaseCode.java:307)	at org.python.core.PyBaseCode.call(PyBaseCode.java:198)	at org.python.core.PyFunction.__call__(PyFunction.java:482)	at org.python.core.PyMethod.instancemethod___call__(PyMethod.java:237)	at org.python.core.PyMethod.__call__(PyMethod.java:228)	at org.python.core.PyMethod.__call__(PyMethod.java:218)	at org.python.core.PyMethod.__call__(PyMethod.java:213)	at org.python.core.PyObject._jcallexc(PyObject.java:3626)	at org.python.core.PyObject._jcall(PyObject.java:3658)	at org.python.proxies.__builtin__$PersonAuthentication$0.prepareForStep(Unknown Source)	at org.xdi.oxauth.service.external.ExternalAuthenticationService.executeExternalPrepareForStep(ExternalAuthenticationService.java:213)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)	at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:79)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)	at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:196)	at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:114)	at org.xdi.oxauth.service.external.ExternalAuthenticationService_$$_javassist_seam_22.executeExternalPrepareForStep(ExternalAuthenticationService_$$_javassist_seam_22.java)	at org.xdi.oxauth.auth.Authenticator.prepareAuthenticationForStep(Authenticator.java:493)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)	at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:79)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)	at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:196)	at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:114)	at org.xdi.oxauth.auth.Authenticator_$$_javassist_seam_43.prepareAuthenticationForStep(Authenticator_$$_javassist_seam_43.java)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348)	at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)	at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)	at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)	at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:222)	at org.jboss.seam.navigation.Page.preRender(Page.java:311)	at org.jboss.seam.navigation.Pages.preRender(Pages.java:351)	at org.jboss.seam.jsf.SeamPhaseListener.preRenderPage(SeamPhaseListener.java:565)	at org.jboss.seam.jsf.SeamPhaseListener.beforeRenderResponse(SeamPhaseListener.java:476)	at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:147)	at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:117)	at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:228)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:99)	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:845)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:566)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:199)	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:74)	at org.jboss.seam.web.RewriteFilter.process(RewriteFilter.java:98)	at org.jboss.seam.web.RewriteFilter.doFilter(RewriteFilter.java:57)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:73)	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)