Thank you for ur reply when "exception: Error occurred. Unable to retrieve document, please contact the helpdesk." occurred, then need to get actor from message section, Please advise exception: Error occurred. Unable to retrieve document, please contact the helpdesk. logger: com.web.controller.DocumentController message: 2020-05-14T13:12:47.753Z [taskExecutor-50] ui-prd-140-wttsz UI ERROR c.o.d.d.w.c.DocumentController:-1 - Unable to retrieve the content for source Actor Raja. com..exception.DocumentNotFoundException: Error occurred. Unable to retrieve document, please contact the helpdesk. at com.web.controller.DocumentController$1$4.extractData(Unknown Source) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:662) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:635) at com.web.controller.DocumentController$1.call(Unknown Source) at com..web.controller.DocumentController$1.call(Unknown Source) at org.springframework.web.context.request.async.WebAsyncManager$5.run(WebAsyncManager.java:327) at co.elastic.apm.agent.impl.async.SpanInScopeRunnableWrapper.run(SpanInScopeRunnableWrapper.java:64) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException: null ... View more