Description The server encountered an unexpected condition that prevented it from fulfilling the request.

[csm19910701]

运行好端端的，一下子就访问不了了。

访问页面返回错误：

HTTP Status 500 – Internal Server Error Type Status Report

Message Error occured when handling uri: /cat/r/t

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Apache Tomcat/8.5.41

后台错误日志： Caused by: java.lang.NullPointerException at com.dianping.cat.report.page.transaction.transform.AllMachineMerger.visitTransactionReport(AllMachineMerger.java:92) at com.dianping.cat.report.page.transaction.transform.TransactionMergeHelper.mergeAllMachines(TransactionMergeHelper.java:34) at com.dianping.cat.report.page.transaction.Handler.handleOutbound(Handler.java:238) at sun.reflect.GeneratedMethodAccessor195.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.unidal.lookup.util.ReflectUtils.invokeMethod(ReflectUtils.java:49) ... 46 more

[power-lin]

这个应该是没有查到历史数据，其他历史数据正常吗，还是都不正常？