又出现时间戳问题了，这次是在ECS上

[Error Code]:RequestTimeTooSkewed, [Message]:The difference between the request time and the current time is too large.
    at com.aliyun.openservices.oss.internal.OSSExceptionFactory.create(OSSExceptionFactory.java:14)
    at com.aliyun.openservices.oss.internal.OSSErrorResponseHandler.handle(OSSErrorResponseHandler.java:39)
    at com.aliyun.common.comm.ServiceClient.handleResponse(ServiceClient.java:281)
    at com.aliyun.common.comm.ServiceClient.sendRequestImpl(ServiceClient.java:177)
    at com.aliyun.common.comm.ServiceClient.sendRequest(ServiceClient.java:138)
    at com.aliyun.openservices.oss.internal.OSSOperation.send(OSSOperation.java:59)
    at com.aliyun.openservices.oss.internal.OSSBucketOperation.listBuckets(OSSBucketOperation.java:102)
    at com.aliyun.openservices.oss.internal.OSSBucketOperation.bucketExists(OSSBucketOperation.java:189)
    at com.aliyun.openservices.oss.OSSClient.doesBucketExist(OSSClient.java:227)
    at com.cmspad.app.server.aliyun.StorageManager.checkSystem(StorageManager.java:376)
    at com.cmspad.app.server.aliyun.PluginManager.checkPlugins(PluginManager.java:310)
    at com.cmspad.app.server.ServerActivator$1.run(ServerActivator.java:184)
    at java.util.TimerThread.mainLoop(Unknown Source)
    at java.util.TimerThread.run(Unknown Source)


这次问题分别出在11月8日上午11时、11月10日2时和11月11日4时。那个时间段谁都没有维护，ECS上自动维护OSS怎么就出现这个问题呢？