2020-05-09 12:19:26.516+0000 [id=38] WARNING jenkins.model.Jenkins$5#runTask: Loading global config failed perhaps due to plugin dependency issues
java.lang.LinkageError: loader constraint violation: when resolving method "org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;" the class loader (instance of hudson/PluginFirstClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of org/eclipse/jetty/webapp/WebAppClassLoader) for the method's defining class, org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type org/slf4j/ILoggerFactory used in the signature
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:418)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
at hudson.plugins.ec2.CloudHelper.<clinit>(CloudHelper.java:24)
at hudson.plugins.ec2.EC2Computer.getState(EC2Computer.java:139)
at hudson.plugins.ec2.EC2RetentionStrategy.start(EC2RetentionStrategy.java:241)
at hudson.plugins.ec2.EC2RetentionStrategy.start(EC2RetentionStrategy.java:52)
at hudson.model.AbstractCIBase.updateComputer(AbstractCIBase.java:162)
at hudson.model.AbstractCIBase.access$000(AbstractCIBase.java:44)
at hudson.model.AbstractCIBase$2.run(AbstractCIBase.java:224)
at hudson.model.Queue._withLock(Queue.java:1398)
at hudson.model.Queue.withLock(Queue.java:1275)
at hudson.model.AbstractCIBase.updateComputerList(AbstractCIBase.java:207)
at jenkins.model.Jenkins.updateComputerList(Jenkins.java:1635)
at jenkins.model.Nodes$9.run(Nodes.java:351)
at hudson.model.Queue._withLock(Queue.java:1398)
at hudson.model.Queue.withLock(Queue.java:1275)
at jenkins.model.Nodes.load(Nodes.java:346)
at jenkins.model.Jenkins$13.run(Jenkins.java:3254)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:1131)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
...
2020-05-09 12:19:27.321+0000 [id=46] SEVERE hudson.triggers.SafeTimerTask#run: Timer task hudson.slaves.ComputerRetentionWork@5988e277 failed
java.lang.NoClassDefFoundError: Could not initialize class hudson.plugins.ec2.CloudHelper
at hudson.plugins.ec2.EC2Computer.getState(EC2Computer.java:139)
at hudson.plugins.ec2.EC2RetentionStrategy.internalCheck(EC2RetentionStrategy.java:146)
at hudson.plugins.ec2.EC2RetentionStrategy.check(EC2RetentionStrategy.java:107)
at hudson.plugins.ec2.EC2RetentionStrategy.check(EC2RetentionStrategy.java:52)
at hudson.slaves.ComputerRetentionWork$1.run(ComputerRetentionWork.java:70)
at hudson.model.Queue._withLock(Queue.java:1398)
at hudson.model.Queue.withLock(Queue.java:1275)
at hudson.slaves.ComputerRetentionWork.doRun(ComputerRetentionWork.java:61)
at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:91)
at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:58)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
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)
