Error on device:5 - java.lang.NullPointerException
ru.bitel.bgbilling.common.BGException: Error on device:5 - java.lang.NullPointerException
        at ru.bitel.bgbilling.modules.inet.access.sa.ServiceActivatorDeviceWorker.doTask(ServiceActivatorDeviceWorker.java:411)
        at ru.bitel.bgbilling.kernel.event.AsyncEventWorker.internalDoTaskImpl(AsyncEventWorker.java:209)
        at ru.bitel.bgbilling.kernel.event.AsyncEventWorker.internalDoTask(AsyncEventWorker.java:181)
        at ru.bitel.bgbilling.kernel.event.AsyncEventWorker.doTasks(AsyncEventWorker.java:107)
        at ru.bitel.bgbilling.modules.inet.access.sa.ServiceActivatorDeviceWorker.runWorker(ServiceActivatorDeviceWorker.java:203)
        at ru.bitel.bgbilling.kernel.event.EventWorker.internalRunWorker(EventWorker.java:139)
        at ru.bitel.bgbilling.modules.inet.access.sa.ServiceActivatorDeviceWorker.runImpl(ServiceActivatorDeviceWorker.java:133)
        at ru.bitel.common.worker.WorkerTask.run(WorkerTask.java:86)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
        at ru.bitel.common.worker.WorkerThread.run(WorkerThread.java:40)
Caused by: java.lang.NullPointerException
        at java.nio.CharBuffer.wrap(CharBuffer.java:464)
        at java.nio.charset.Charset.encode(Charset.java:830)
        at ru.bitel.bgbilling.kernel.network.radius.info.StringInfo.wrapValue(StringInfo.java:56)
        at ru.bitel.bgbilling.kernel.network.radius.info.StringInfo.wrapValue(StringInfo.java:1)
        at ru.bitel.bgbilling.kernel.network.tlv.Tlv.<init>(Tlv.java:36)
        at ru.bitel.bgbilling.kernel.network.radius.RadiusAttribute.<init>(RadiusAttribute.java:39)
        at ru.bitel.bgbilling.kernel.network.radius.RadiusAttribute.<init>(RadiusAttribute.java:51)
        at ru.bitel.bgbilling.modules.inet.dyn.device.radius.AbstractRadiusServiceActivator.prepareRequest(AbstractRadiusServiceActivator.java:322)
        at ru.bitel.bgbilling.modules.inet.dyn.device.radius.CoAServiceActivator.connectionClose(CoAServiceActivator.java:112)
        at ru.bitel.bgbilling.modules.inet.access.sa.ServiceActivatorSet.connectionClose(ServiceActivatorSet.java:171)
        at ru.bitel.bgbilling.modules.inet.access.sa.ServiceActivatorDeviceWorker.doCommand(ServiceActivatorDeviceWorker.java:440)
        at ru.bitel.bgbilling.modules.inet.access.sa.ServiceActivatorDeviceWorker.doTask(ServiceActivatorDeviceWorker.java:407)

request.setAttribute( new RadiusAttribute<String>( -1, RadiusDictionary.Acct_Session_Id, 0, connection.getAcctSessionId() ) );