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我想将我的 android 手机连接到 Windows 10 上的 WSO2 服务器,我按照指南: 快速启动 输入服务器 IP 及其端口和用户凭据后,出现“检索策略协议”消息,过了一会儿消息改为:“注册失败,请联系管理员”。

iot-server.bat 没有显示任何错误。但是,运行 analytics.bat 时出现以下错误:

 [2018-11-17 14:35:01,631] [IoT-Analytics] ERROR {org.wso2.carbon.ntask.core.impl.TaskQuartzJobAdapter} -  Error in executing task: null
java.lang.NullPointerException
        at org.wso2.carbon.analytics.spark.core.CarbonAnalyticsProcessorService.executeQuery(CarbonAnalyticsProcessorService.java:256)
        at org.wso2.carbon.analytics.spark.core.CarbonAnalyticsProcessorService.executeScript(CarbonAnalyticsProcessorService.java:206)
        at org.wso2.carbon.analytics.spark.core.AnalyticsTask.execute(AnalyticsTask.java:60)
        at org.wso2.carbon.ntask.core.impl.TaskQuartzJobAdapter.execute(TaskQuartzJobAdapter.java:67)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
        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)

问题是什么?如何解决?

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