Mar 05, 2020 10:54:35 AM INFO hudson.model.AsyncPeriodicWork lambda$doRun$0

Started EC2 alive slaves monitor

Mar 05, 2020 10:54:35 AM SEVERE hudson.init.impl.InstallUncaughtExceptionHandler$DefaultUncaughtExceptionHandler uncaughtException

A thread (EC2 alive slaves monitor thread/10354) died unexpectedly due to an uncaught exception, this may leave your Jenkins in a bad way and is usually indicative of a bug in the code.
java.lang.NullPointerException
	at hudson.plugins.ec2.util.MinimumInstanceChecker.lambda$countQueueItemsForAgentTemplate$8(MinimumInstanceChecker.java:67)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.LongPipeline.reduce(LongPipeline.java:461)
	at java.util.stream.LongPipeline.sum(LongPipeline.java:419)
	at java.util.stream.ReferencePipeline.count(ReferencePipeline.java:593)
	at hudson.plugins.ec2.util.MinimumInstanceChecker.countQueueItemsForAgentTemplate(MinimumInstanceChecker.java:68)
	at hudson.plugins.ec2.util.MinimumInstanceChecker.lambda$null$11(MinimumInstanceChecker.java:87)
	at java.util.ArrayList.forEach(ArrayList.java:1257)
	at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1082)
	at hudson.plugins.ec2.util.MinimumInstanceChecker.lambda$checkForMinimumInstances$12(MinimumInstanceChecker.java:76)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.Iterator.forEachRemaining(Iterator.java:116)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
	at hudson.plugins.ec2.util.MinimumInstanceChecker.checkForMinimumInstances(MinimumInstanceChecker.java:75)
	at hudson.plugins.ec2.EC2SlaveMonitor.execute(EC2SlaveMonitor.java:41)
	at hudson.model.AsyncPeriodicWork.lambda$doRun$0(AsyncPeriodicWork.java:100)
	at java.lang.Thread.run(Thread.java:748)