Issue in Jenkins integration with GitHub and Ionic project - jenkins

Question

I am trying to integrate ionic application with Jenkins and i am using GitHub as a repository. When i run the Multibranch pipeline job manually, the Jenkin is displaying below error.
Does anyone know what can be possible issue ? I am trying to learn how CI/CD works with this demo experiment.
I am referring this Youtube video : https://www.youtube.com/watch?v=q5voVJb3rHI&t=605s
Started by user admin
13:42:45 Connecting to https://api.github.com using PrashobThekkyal/*****
Obtained Jenkinsfile from a85fffb01a96c5c5d550326873047c6071557aff
Running in Durability level: MAX_SURVIVABILITY
GitHub has been notified of this commit’s build result
java.lang.IllegalArgumentException: Unsupported class file major version 57
at org.kohsuke.asm6.ClassReader.<init>(ClassReader.java:176)
at org.kohsuke.asm6.ClassReader.<init>(ClassReader.java:158)
at org.kohsuke.asm6.ClassReader.<init>(ClassReader.java:146)
at org.jenkinsci.bytecode.helper.ClassLoadingReferenceTypeHierachyReader.reader(ClassLoadingReferenceTypeHierachyReader.java:64)
at org.jenkinsci.bytecode.helper.TypeHierarchyReader.hierarchyOf(TypeHierarchyReader.java:176)
at org.jenkinsci.bytecode.helper.ClassLoadingReferenceTypeHierachyReader.hierarchyOf(ClassLoadingReferenceTypeHierachyReader.java:39)
at org.jenkinsci.bytecode.helper.TypeHierarchyReader$TypeHierarchy.isAssignableFrom(TypeHierarchyReader.java:321)
at org.jenkinsci.bytecode.helper.TypeHierarchyReader$TypeHierarchy.isAssignableFromAnyInterfaceImplementedBy(TypeHierarchyReader.java:329)
at org.jenkinsci.bytecode.helper.TypeHierarchyReader$TypeHierarchy.isAssignableFrom(TypeHierarchyReader.java:311)
at org.jenkinsci.bytecode.helper.TypeHierarchyReader.isAssignableFrom(TypeHierarchyReader.java:124)
at org.jenkinsci.bytecode.helper.ClassLoadingReferenceTypeHierachyReader.isAssignableFrom(ClassLoadingReferenceTypeHierachyReader.java:39)
at org.jenkinsci.bytecode.helper.TypeHierarchyReader.getCommonSuperClass(TypeHierarchyReader.java:131)
at org.jenkinsci.bytecode.helper.ClassLoadingReferenceTypeHierachyReader.getCommonSuperClass(ClassLoadingReferenceTypeHierachyReader.java:39)
at org.jenkinsci.bytecode.NonClassLoadingClassWriter.getCommonSuperClass(NonClassLoadingClassWriter.java:72)
at org.kohsuke.asm6.SymbolTable.addMergedType(SymbolTable.java:1209)
at org.kohsuke.asm6.Frame.merge(Frame.java:1293)
at org.kohsuke.asm6.Frame.merge(Frame.java:1238)
at org.kohsuke.asm6.MethodWriter.computeAllFrames(MethodWriter.java:1604)
at org.kohsuke.asm6.MethodWriter.visitMaxs(MethodWriter.java:1540)
at org.kohsuke.asm6.tree.MethodNode.accept(MethodNode.java:807)
at org.kohsuke.asm6.commons.JSRInlinerAdapter.visitEnd(JSRInlinerAdapter.java:150)
at org.jenkinsci.bytecode.Transformer$1$1.visitEnd(Transformer.java:109)
at org.kohsuke.asm6.MethodVisitor.visitEnd(MethodVisitor.java:783)
at org.kohsuke.asm6.ClassReader.readMethod(ClassReader.java:1278)
at org.kohsuke.asm6.ClassReader.accept(ClassReader.java:679)
at org.kohsuke.asm6.ClassReader.accept(ClassReader.java:391)
at org.jenkinsci.bytecode.Transformer.transform(Transformer.java:115)
at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:706)
at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)
at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1363)
at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)
at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1079)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at org.jenkinsci.plugins.workflow.cps.CpsScript.<init>(CpsScript.java:69)
at WorkflowScript.<init>(WorkflowScript)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
at java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:166)
at java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:404)
at java.base/java.lang.Class.newInstance(Class.java:591)
at org.codehaus.groovy.runtime.InvokerHelper.createScript(InvokerHelper.java:434)
Caused: groovy.lang.GroovyRuntimeException: Failed to create Script instance for class: class WorkflowScript. Reason
at org.codehaus.groovy.runtime.InvokerHelper.createScript(InvokerHelper.java:466)
at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:142)
at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:127)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:561)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:522)
at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:327)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE
Jenkinsfile
pipeline {
agent any
stages {
stage ('Build') {
steps {
echo "Building Multibranch Pipeline"
}
}
stage ('Testing') {
steps {
echo "Testing Multibranch Pipeline"
}
}
stage ('Deployment') {
steps {
echo "False Deploying Multibranch Pipeline"
}
}
}
}
Jenkins Job configuration:

Answer 1

After days of analysis finally I have found the solution. I have did a very basic mistake of not reading version requirement to run Jenkins.
Java requirement to run Jenkins job
As mentioned in above URL, under the section 'Running Jenkins', they have clearly mentioned the support versions of java to run Jenkins job. So I checked java version and it was running on Java 13-a, yes that was stupid, because the Jenkins job will only run with java version 8 and 11.
So degrade your java version to 8 or 11 and it will work smoothly.
Proof
I thought to delete my stupid question, but later I thought to keep it, if in case it could help somebody. Kindly please don't give any kind of (+ve or -vew) points to this post, as it doesn't make any sense.