JT-18877: jetbrains-youtrack-pomodoroTimer->Pomodoro countdown threw an unhandled Exception

java.util.NoSuchElementException
	at java.util.LinkedList.remove(LinkedList.java:788)
	at java.util.LinkedList.removeFirst(LinkedList.java:134)
	at jetbrains.mps.webr.userManagement.runtime.PrincipalManagerImpl.unsetTemporaryServerPrincipal(PrincipalManagerImpl.java:178)
	at jetbrains.charisma.main.CharismaPrincipalManagerImpl.unsetTemporaryServerPrincipal(CharismaPrincipalManagerImpl.java:28)
	at jetbrains.youtrack.workflow.model.StatelessOnScheduleRule.onCron(StatelessOnScheduleRule.java:150)
	at jetbrains.youtrack.workflow.model.QuartzJobImpl$1.run(QuartzJobImpl.java:28)
	at jetbrains.mps.businessRules.runtime.TransactionalExecutor$1.invoke(TransactionalExecutor.java:16)
	at jetbrains.teamsys.dnq.runtime.txn._Txn.runNew(_Txn.java:253)
	at jetbrains.mps.businessRules.runtime.TransactionalExecutor.execute(TransactionalExecutor.java:14)
	at webr.framework.controller.BeanContainerAwareExecutorWrapper.execute(BeanContainerAwareExecutorWrapper.java:24)
	at jetbrains.youtrack.workflow.model.QuartzJobImpl.execute(QuartzJobImpl.java:25)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
	at jetbrains.exodus.core.execution.RunnableJob.execute(RunnableJob.java:26)
	at jetbrains.exodus.core.execution.Job.run(Job.java:75)
	at jetbrains.exodus.core.execution.ThreadJobProcessor.executeJob(ThreadJobProcessor.java:116)
	at jetbrains.exodus.core.execution.JobProcessorQueueAdapter.executeOrdinaryJob(JobProcessorQueueAdapter.java:168)
	at jetbrains.exodus.core.execution.JobProcessorQueueAdapter.doJobs(JobProcessorQueueAdapter.java:96)
	at jetbrains.exodus.core.execution.ThreadJobProcessor.run(ThreadJobProcessor.java:94)
	at jetbrains.exodus.core.execution.ThreadJobProcessor$1.run(ThreadJobProcessor.java:28)
	at java.lang.Thread.run(Thread.java:662)