2020-01-28_14:06:02.605 [task:scheduler#31e42132-1] ERROR o.s.s.s.TaskUtils$LoggingErrorHandler [] - Unexpected error occurred in scheduled task.
java.lang.NullPointerException: null
        at com.sc.cpgu.schedule.PingStatusTaskSuite.ping(PingStatusTaskSuite.java:52) ~[PingStatusTaskSuite.class:na]
        at com.sc.cpgu.schedule.PingStatusTaskSuite$$FastClassByCGLIB$$110f09fa.invoke(<generated>) ~[cglib-nodep-2.2.2.jar:na]
        at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[cglib-nodep-2.2.2.jar:na]
        at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689) ~[spring-aop-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) ~[spring-aop-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) ~[spring-tx-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) ~[spring-aop-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622) ~[spring-aop-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at com.sc.cpgu.schedule.PingStatusTaskSuite$$EnhancerByCGLIB$$33231441.ping(<generated>) ~[cglib-nodep-2.2.2.jar:na]
        at sun.reflect.GeneratedMethodAccessor509.invoke(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]
        at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:64) ~[spring-context-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at com.sc.cpgu.service.cluster.ClusteredRunnable.taskRun(ClusteredRunnable.java:71) ~[ClusteredRunnable.class:na]
        at com.sc.cpgu.service.cluster.ClusteredRunnable.run(ClusteredRunnable.java:39) ~[ClusteredRunnable.class:na]
        at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53) ~[spring-context-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81) [spring-context-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_172]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_172]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_172]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_172]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_172]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_172]
        at java.lang.Thread.run(Thread.java:748) [na:1.8.0_172]