I was going to put up a hook which triggers a build after a push is committed to Github. And after I installed a plugin called "Github Integration Plugin", and restarted the jenkins, it would not start normal, giving the same error always:

(No matter how many times I have restarted jenkins server, or try-restarted, it seems never to change its look like bleow)

hudson.util.HudsonFailedToLoad: org.jvnet.hudson.reactor.ReactorException: java.lang.Error: java.lang.reflect.InvocationTargetException
at hudson.WebAppMain$3.run(WebAppMain.java:244)
Caused by: org.jvnet.hudson.reactor.ReactorException: java.lang.Error: java.lang.reflect.InvocationTargetException
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:269)
at jenkins.InitReactorRunner.run(InitReactorRunner.java:45)
at jenkins.model.Jenkins.executeReactor(Jenkins.java:1010)
at jenkins.model.Jenkins.<init>(Jenkins.java:878)
at hudson.model.Hudson.<init>(Hudson.java:85)
at hudson.model.Hudson.<init>(Hudson.java:81)
at hudson.WebAppMain$3.run(WebAppMain.java:227)
Caused by: java.lang.Error: java.lang.reflect.InvocationTargetException
at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:110)
at hudson.init.TaskMethodFinder$TaskImpl.run(TaskMethodFinder.java:175)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$7.runTask(Jenkins.java:999)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:104)
... 8 more
Caused by: com.google.inject.ProvisionException: Guice provision errors:

1) Error in custom provider, com.google.inject.internal.guava.collect.$ComputationException: java.lang.IllegalArgumentException
at hudson.ExtensionFinder$GuiceFinder$SezpozModule.configure(ExtensionFinder.java:508)
while locating org.jenkinsci.plugins.workflow.job.WorkflowJob$DescriptorImpl