There are a bunch of these cxceptiones in the Jenkins log with a master running on AdoptOpenJDK 11 (follow up to JENKINS-60725).
WARNING jenkins.telemetry.impl.java11.MissingClassTelemetry reportExceptionAdded a missed class for missing class telemetry. Class: com.sun.jndi.url.java.javaURLContextFactory
java.lang.ClassNotFoundException: com.sun.jndi.url.java.javaURLContextFactory
at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1383)
at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1336)
at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1083)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch4(RemoteClassLoader.java:846)
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch3(RemoteClassLoader.java:889)
at jdk.internal.reflect.GeneratedMethodAccessor50.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:929)
at hudson.remoting.Request$2.run(Request.java:369)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at org.jenkinsci.remoting.CallableDecorator.call(CallableDecorator.java:18)
at hudson.remoting.CallableDecoratorList$1.call(CallableDecoratorList.java:21)
at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)