|  |  |  | 
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|  |  |  | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) | 
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|  |  |  | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) | 
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|  |  |  | at java.lang.Thread.run(Thread.java:748) | 
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|  |  |  | 2025-05-30 18:02:24.116 [SessionValidationThread-1] ERROR o.a.s.s.m.ExecutorServiceSessionValidationScheduler - Error while validating the session | 
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|  |  |  | java.lang.NullPointerException: null | 
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|  |  |  | at org.apache.shiro.session.mgt.AbstractValidatingSessionManager.validateSessions(AbstractValidatingSessionManager.java:287) | 
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|  |  |  | at org.apache.shiro.session.mgt.ExecutorServiceSessionValidationScheduler.run(ExecutorServiceSessionValidationScheduler.java:120) | 
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|  |  |  | at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) | 
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|  |  |  | at java.util.concurrent.FutureTask.runAndReset$$$capture(FutureTask.java:308) | 
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|  |  |  | at java.util.concurrent.FutureTask.runAndReset(FutureTask.java) | 
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|  |  |  | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) | 
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|  |  |  | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) | 
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|  |  |  | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) | 
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|  |  |  | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) | 
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|  |  |  | at java.lang.Thread.run(Thread.java:748) | 
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