Our jenkins version is 1.609.3, we have installed a plugin parameterized scheduler which is not compatible to our jenkins version .So we started seeing the below issues and uninstalled the plugin and restarted jenkins but did not work.please find the issue:

FATAL: org/jenkinsci/plugins/workflow/job/WorkflowRun

java.lang.NoClassDefFoundErrororg/jenkinsci/plugins/workflow/job/WorkflowRun at

org.jenkinsci.plugins.workflow.job.WorkflowJob$SCMListenerImpl.onCheckout(WorkflowJob.java:653

at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:614) 

at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)

at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:531)

at hudson.model.Run.execute(Run.java:1738) 

at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)

at hudson.model.ResourceController.execute(ResourceController.java:98)

at hudson.model.Executor.run(Executor.java:381)