java.lang.UnsupportedClassVersionError: com/trilead/ssh2/ServerHostKeyVerifier has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:635)
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:458)
Caused: java.lang.UnsupportedClassVersionError: Failed to load com.trilead.ssh2.ServerHostKeyVerifier
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:460)
	at hudson.remoting.RemoteClassLoader.loadRemoteClass(RemoteClassLoader.java:292)
	at hudson.remoting.RemoteClassLoader.loadWithMultiClassLoader(RemoteClassLoader.java:269)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:228)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:635)
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:458)
Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to DockerServer
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1784)
		at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356)
		at hudson.remoting.Channel.call(Channel.java:1000)
		at hudson.FilePath.act(FilePath.java:1194)
		at hudson.FilePath.act(FilePath.java:1183)
		at org.jenkinsci.plugins.gitclient.Git.getClient(Git.java:140)
		at hudson.plugins.git.GitSCM.createClient(GitSCM.java:916)
		at hudson.plugins.git.GitSCM.createClient(GitSCM.java:847)
		at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1297)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
		at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
		at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
		at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
		at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
		at java.base/java.lang.Thread.run(Thread.java:834)
Caused: java.lang.UnsupportedClassVersionError: Failed to load org.jenkinsci.plugins.gitclient.verifier.AbstractJGitHostKeyVerifier
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:460)
	at hudson.remoting.RemoteClassLoader.loadRemoteClass(RemoteClassLoader.java:292)
	at hudson.remoting.RemoteClassLoader.loadWithMultiClassLoader(RemoteClassLoader.java:269)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:228)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
	at java.lang.Class.getDeclaredMethod(Class.java:2128)
	at java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1643)
	at java.io.ObjectStreamClass.access$1700(ObjectStreamClass.java:79)
	at java.io.ObjectStreamClass$3.run(ObjectStreamClass.java:520)
	at java.io.ObjectStreamClass$3.run(ObjectStreamClass.java:494)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:494)
	at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:391)
	at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:681)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2003)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1850)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2003)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1850)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2160)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2405)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2329)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2187)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2405)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2329)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2187)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:503)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:461)
	at hudson.remoting.UserRequest.deserialize(UserRequest.java:289)
	at hudson.remoting.UserRequest.perform(UserRequest.java:189)
	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
	at hudson.remoting.Request$2.run(Request.java:376)
	at hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Also:   org.jenkinsci.plugins.workflow.steps.FlowInterruptedException
		at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.interrupt(CpsFlowExecution.java:1150)
		at org.jenkinsci.plugins.workflow.job.WorkflowRun$2.lambda$interrupt$0(WorkflowRun.java:397)
		at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:67)
		at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
		at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
Caused: java.io.IOException: Remote call on DockerServer failed
	at hudson.remoting.Channel.call(Channel.java:1004)
	at hudson.FilePath.act(FilePath.java:1194)
	at hudson.FilePath.act(FilePath.java:1183)
	at org.jenkinsci.plugins.gitclient.Git.getClient(Git.java:140)
	at hudson.plugins.git.GitSCM.createClient(GitSCM.java:916)
	at hudson.plugins.git.GitSCM.createClient(GitSCM.java:847)
	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1297)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)