1. 2018-08-25 04:33:01,482 ERROR [http-nio-0.0.0.0-8080-exec-288] c.p.l.k.s.KnewtonResponseHandler [KnewtonResponseHandler.java:33] Knewton Failed to Process Request: StatusLine: HTTP/1.1 422 Unprocessable Entity
2. 2018-08-25 04:33:01,483 DEBUG [http-nio-0.0.0.0-8080-exec-288] c.p.l.e.s.UserRegistrationServiceImpl [UserRegistrationServiceImpl.java:64] The Knewton registration Instance Generated Response:HTTP/1.1 422 Unprocessable Entity
3. 2018-08-25 04:33:01,483 ERROR [http-nio-0.0.0.0-8080-exec-288] c.p.l.e.s.UserRegistrationServiceImpl [UserRegistrationServiceImpl.java:71] Error in Parsing External Registration Response - Knewton Response: HTTP/1.1 422 Unprocessable Entity and Exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'HTTP': was expecting ('true', 'false' or 'null')
4.  at [Source: HTTP/1.1 422 Unprocessable Entity; line: 1, column: 5]
5. 2018-08-25 04:33:01,483 ERROR [http-nio-0.0.0.0-8080-exec-288] c.p.l.e.s.UserRegistrationServiceImpl [UserRegistrationServiceImpl.java:46] Error in Creating External Registration For the Teacher Id [ffffffff5b762e68943af824e47e2501], External Class Id [6a4a04c0-5cbf-457a-9fe1-c0d5d43743eb] with Knewton
6. 2018-08-25 04:33:01,486 ERROR [http-nio-0.0.0.0-8080-exec-288] c.p.l.e.h.RestResponseEntityExceptionHandler [RestResponseEntityExceptionHandler.java:55] ExternalSystemResourceNotFoundException occured : {}
7. com.pearson.ltg.externalmapping.exception.ExternalSystemResourceNotFoundException: Error in Creating External Registration For the Teacher Id [ffffffff5b762e68943af824e47e2501], External Class Id [6a4a04c0-5cbf-457a-9fe1-c0d5d43743eb] with Knewton
8.         at com.pearson.ltg.externalmapping.service.UserRegistrationServiceImpl.createUserRegistration(UserRegistrationServiceImpl.java:47) ~[UserRegistrationServiceImpl.class:na]
9.         at com.pearson.ltg.externalmapping.service.ClassMappingServiceImpl.createUserRegistration(ClassMappingServiceImpl.java:120) ~[ClassMappingServiceImpl.class:na]
10.         at com.pearson.ltg.externalmapping.service.ClassMappingServiceImpl.updateUserRegistrationMappings(ClassMappingServiceImpl.java:114) ~[ClassMappingServiceImpl.class:na]
11.         at com.pearson.ltg.externalmapping.service.ClassMappingServiceImpl.createExternalMappingForStudents(ClassMappingServiceImpl.java:91) ~[ClassMappingServiceImpl.class:na]
12.         at com.pearson.ltg.externalmapping.service.ClassMappingServiceImpl.saveClassMappings(ClassMappingServiceImpl.java:74) ~[ClassMappingServiceImpl.class:na]
13.         at com.pearson.ltg.externalmapping.service.CMSProsperoEventService.upsertClassProsperoEvent(CMSProsperoEventService.java:80) ~[CMSProsperoEventService.class:na]
14.         at com.pearson.ltg.externalmapping.controller.CMSProsperoEventController.createClass(CMSProsperoEventController.java:51) ~[CMSProsperoEventController.class:na]
15.         at sun.reflect.GeneratedMethodAccessor137.invoke(Unknown Source) ~[na:na]
16.         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]
17.         at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]
18.         at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
19.         at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) ~[spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
20.         at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
21.         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
22.         at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
23.         at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
24.         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
25.         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
26.         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
27.         at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
28.         at javax.servlet.http.HttpServlet.service(HttpServlet.java:644) [servlet-api.jar:na]
29.         at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843) ~[spring-webmvc-4.1.7.RELEASE.jar:4.1.7.RELEASE]
30.         at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) [servlet-api.jar:na]
31.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) [catalina.jar:8.0.20]
32.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
33.         at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-websocket.jar:8.0.20]
34.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
35.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
36.         at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:295) [spring-boot-actuator-1.2.5.RELEASE.jar:1.2.5.RELEASE]
37.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
38.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
39.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
40.         at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102) [spring-boot-actuator-1.2.5.RELEASE.jar:1.2.5.RELEASE]
41.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
42.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
43.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
44.         at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
45.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
46.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
47.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
48.         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
49.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
50.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
51.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
52.         at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:68) [spring-boot-actuator-1.2.5.RELEASE.jar:1.2.5.RELEASE]
53.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
54.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
55.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
56.         at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:116) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
57.         at org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:60) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
58.         at org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:91) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
59.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.7.RELEASE.jar:4.1.7.RELEASE]
60.         at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:109) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
61.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
62.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
63.         at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) [log4j-core-2.0-rc1.jar:2.0-rc1]
64.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) [catalina.jar:8.0.20]
65.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina.jar:8.0.20]
66.         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) [catalina.jar:8.0.20]
67.         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) [catalina.jar:8.0.20]
68.         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) [catalina.jar:8.0.20]
69.         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) [catalina.jar:8.0.20]
70.         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [catalina.jar:8.0.20]
71.         at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) [catalina.jar:8.0.20]
72.         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) [catalina.jar:8.0.20]
73.         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516) [catalina.jar:8.0.20]
74.         at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086) [tomcat-coyote.jar:8.0.20]
75.         at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659) [tomcat-coyote.jar:8.0.20]
76.         at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) [tomcat-coyote.jar:8.0.20]
77.         at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558) [tomcat-coyote.jar:8.0.20]
78.         at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515) [tomcat-coyote.jar:8.0.20]
79.         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_172]
80.         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_172]
81.         at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.20]
82.         at java.lang.Thread.run(Thread.java:748) [na:1.8.0_172]
83. 2018-08-25 04:33:01,486 ERROR [http-nio-0.0.0.0-8080-exec-288] c.p.l.e.h.RestResponseEntityExceptionHandler [RestResponseEntityExceptionHandler.java:60] Exception occured : Error in Creating External Registration For the Teacher Id [ffffffff5b762e68943af824e47e2501], External Class Id [6a4a04c0-5cbf-457a-9fe1-c0d5d43743eb] with Knewton
84.  
85.  
86.