After updating Jenkins I am getting an error when trying to create or modify an agent within Jenkins

Stack Trace
org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-$JENKINS_VERSION.jar!/jenkins/model/Jenkins/configure.jelly:51:84: <st:include> org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-$JENKINS_VERSION.jar!/lib/form/section.jelly:48:21: <d:invokeBody> org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-$JENKINS_VERSION.jar!/lib/form/block.jelly:32:22: <d:invokeBody> org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/plugins/$CLOUD_NAME/WEB-INF/lib/$CLOUD_NAME.jar!/org/jenkinsci/plugins/$CLOUD_NAME/config.jelly:94:83: <j:forEach> hudson/slaves/CommandLauncher
	at org.apache.commons.jelly.impl.TagScript.handleException(TagScript.java:726)
	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:281)
	at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
	at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
	at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
	at org.apache.commons.jelly.tags.core.OtherwiseTag.doTag(OtherwiseTag.java:41)
	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
	at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
	at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)