客户端无法登陆

报错如下，这个是什么原因啊？
请联系技术支持人员，检查http://127.0.0.1:6888/easupdater/resource.lst
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com.kingdee.eas.client.startup.exception.EASClientException: 文件列表为空，可能是更新功能的服务端问题，请检查http://127.0.0.1:6888/easupdater/resource.lst
at com.kingdee.eas.client.startup.update.check.CacheStateImpl.compare(CacheStateImpl.java:192)
at com.kingdee.eas.client.startup.update.check.CacheStateImpl.(CacheStateImpl.java:70)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createOnDemandDLCacheState(CacheStateFactory.java:45)
at com.kingdee.eas.client.startup.update.check.FullDLCacheStateImplWrapper.(FullDLCacheStateImplWrapper.java:24)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createFullDLCacheState(CacheStateFactory.java:54)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createCurrentCacheState(CacheStateFactory.java:21)
at com.kingdee.eas.client.startup.update.EasClientExplicitUpdater.(EasClientExplicitUpdater.java:41)
at com.kingdee.eas.client.startup.update.EasClientExplicitUpdater.getInstance(EasClientExplicitUpdater.java:37)
at com.kingdee.eas.client.startup.ClientUpdater.update(ClientUpdater.java:44)
at com.kingdee.eas.client.startup.EASClientStarter.update(EASClientStarter.java:58)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.checkAndUpdate(BodyguardDlg.java:276)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.newTask(BodyguardDlg.java:129)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.doTask(BodyguardDlg.java:75)
at com.kingdee.eas.tools.bodyguard.extcomponent.FrmRunTask$3.run(FrmRunTask.java:232)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:39)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:35)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:196)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:179)
at java.lang.Thread.run(Thread.java:662)