Problem: Jenkins instance no longer starts. Stacktrace indicates Pipeline job issues.
Recent Changes: Upgraded nodejs plugin. Reverted it back. Still doesn't start.

I have another instance with the same plugins but fewer jobs that starts fine.

Happy to provide more info but have no idea where to even begin. I'm currently trying to remove any Pipeline jobs to get Jenkins to start.

Stacktrace is attached, but here is the top and bottom for convenience:

hudson.util.HudsonFailedToLoad: java.lang.StackOverflowError
at hudson.WebAppMain$3.run(WebAppMain.java:245)
Caused by: java.lang.StackOverflowError
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:384)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:69)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166)
at com.cloudbees.groovy.cps.CpsTransformer$_visitWithSafepoint_closure6_closure49_closure50.doCall(CpsTransformer.groovy:292)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at

.....

org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:132)
at com.cloudbees.groovy.cps.SandboxCpsTransformer.call(SandboxCpsTransformer.groovy:23)
at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1053)
at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:591)
at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:569)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:546)
at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:67)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:411)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.loadProgramAsync(CpsFlowExecution.java:502)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.onLoad(CpsFlowExecution.java:477)
at org.jenkinsci.plugins.workflow.job.WorkflowRun.onLoad(WorkflowRun.java:531)
at hudson.model.RunMap.retrieve(RunMap.java:224)
at hudson.model.RunMap.retrieve(RunMap.java:56)
at jenkins.model.lazy.AbstractLazyLoadRunMap.load(AbstractLazyLoadRunMap.java:500)
at jenkins.model.lazy.AbstractLazyLoadRunMap.load(AbstractLazyLoadRunMap.java:482)
at jenkins.model.lazy.AbstractLazyLoadRunMap.getByNumber(AbstractLazyLoadRunMap.java:380)
at hudson.model.RunMap.getById(RunMap.java:204)
at org.jenkinsci.plugins.workflow.job.WorkflowRun$Owner.run(WorkflowRun.java:770)
at org.jenkinsci.plugins.workflow.job.WorkflowRun$Owner.get(WorkflowRun.java:780)
at org.jenkinsci.plugins.workflow.flow.FlowExecutionList$1.computeNext(FlowExecutionList.java:65)
at org.jenkinsci.plugins.workflow.flow.FlowExecutionList$1.computeNext(FlowExecutionList.java:57)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at org.jenkinsci.plugins.workflow.flow.FlowExecutionList$ItemListenerImpl.onLoaded(FlowExecutionList.java:172)
at jenkins.model.Jenkins.<init>(Jenkins.java:995)
at hudson.model.Hudson.<init>(Hudson.java:85)
at hudson.model.Hudson.<init>(Hudson.java:81)
at hudson.WebAppMain$3.run(WebAppMain.java:231)