Pipeline is throwing below error when we are calling eachParallel method in Groovy script on list variable.

hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No signature of method: groovy.lang.IntRange.eachParallel() is applicable for argument types: (org.jenkinsci.plugins.workflow.cps.CpsClosure2) values: [org.jenkinsci.plugins.workflow.cps.CpsClosure2@2b7099f]

Enclosed one has the sample code to re-mediate the problem at your end.

Appreciate your help to resolve this issue.