org.xwiki.rendering.macro.MacroExecutionException: Failed to evaluate Script Macro for content [println "[[Confirm launching migration>>${doc.fullName}?confirm=1]]"

for(item in xwiki.searchDocuments("where doc.fullName like 'XWiki.Meeting%'")) {
 def itemdoc = xwiki.getDocument(item)
 println "* Moving page ${item} to space MMCode"
 if (request.confirm=="1")
  itemdoc.rename("MMCode.${itemdoc.name}")
}

for(item in xwiki.searchDocuments("where (doc.fullName like 'XWiki.Meeting%' or doc.space = 'MMCode' or doc.content like '%XWiki.Meeting%') and doc.name<>'Install' and doc.name<>'Migration'")) {
 def changed = false
 def itemdoc = xwiki.getDocument(item)
 def content = itemdoc.getContent()
 def newcontent = content.replaceAll("XWiki.Meeting", "MMCode.Meeting").replaceAll("MMCode.MeetingManager ", "XWiki.MeetingManager ").replaceAll("MMCode.MeetingManager\\.", "XWiki.MeetingManager.") 
 if (content!=newcontent) {
   changed = true
   if (request.confirm=="1") 
    itemdoc.setContent(newcontent)
 }
 
 // Modifying JS Extension code
 itemdoc.use("XWiki.JavaScriptExtension")
 def code = itemdoc.getValue("code")
 if (code) {
  def newcode = code.replaceAll("XWiki.Meeting", "MMCode.Meeting").replaceAll("MMCode.MeetingManager ", "XWiki.MeetingManager ").replaceAll("MMCode.MeetingManager\\.", "XWiki.MeetingManager.")  
  if (code!=newcode) {
    changed = true
    if (request.confirm=="1") 
     itemdoc.set("code", newcode)
  }
 }
 
 if (changed) {
   println "* Updating code in page ${item}"
   if (request.confirm=="1") 
     itemdoc.save("Migrated Meeting Manager code")
 }
}

def boolean migrateDoc(document, confirm) {
 def result = false
 result |= migrateClass(document, "XWiki.MeetingClass", "MMCode.MeetingClass", confirm)
 result |= migrateClass(document, "XWiki.MeetingCycleClass", "MMCode.MeetingCycleClass", confirm)
 result |= migrateClass(document, "XWiki.MeetingCycleItemClass", "MMCode.MeetingCycleItemClass", confirm)
 result |= migrateClass(document, "XWiki.MeetingParticipantClass", "MMCode.MeetingParticipantClass", confirm)
 result |= migrateClass(document, "XWiki.MeetingDateAttemptClass", "MMCode.MeetingDateAttemptClass", confirm)
 return result
}

def boolean migrateClass(document, sourceclass, targetclass, confirm) {
  def result = false
  for(obj in document.getObjects(sourceclass)) {
   result = true
   if (obj!=null) {
    if (confirm) {
     def newobj = new com.xpn.xwiki.objects.BaseObject();
     newobj.merge(obj);
     newobj.setClassName(targetclass);
     document.addObject(targetclass, newobj);
     document.removeObject(obj);
    }
   }
  }
  return result
}

for(item in xwiki.searchDocuments(", BaseObject as obj where doc.fullName=obj.name and obj.className like 'XWiki.Meeting%Class'")) {
 println "* Migrating classes in page ${item}"
 if (request.confirm=="1") {
    def itemdoc = xwiki.getDocument(item)
    def itemdocument = itemdoc.getDocument()
    if (migrateDoc(itemdocument, request.confirm=="1")) {
        xwiki.getXWiki().saveDocument(itemdocument, "Migrated Meeting Manager code", xcontext.getContext())
    }
 }
}]
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:174)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:52)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:198)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:59)
	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transformOnce(MacroTransformation.java:187)
	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:132)
	at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:83)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:248)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:124)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:54)
	at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:80)
	at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:38)
	at com.xpn.xwiki.internal.sheet.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:113)
	at com.xpn.xwiki.internal.sheet.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:57)
	at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:67)
	at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:41)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:862)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:841)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:872)
	at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:586)
	at sun.reflect.GeneratedMethodAccessor5401.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
	at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
	at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:184)
	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:117)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1791)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1728)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:839)
	at sun.reflect.GeneratedMethodAccessor5264.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:184)
	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:117)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1791)
	at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:154)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:241)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:128)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:217)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
	at java.lang.Thread.run(Thread.java:662)
Caused by: javax.script.ScriptException: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getContent() on null object
	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:122)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.eval(AbstractJSR223ScriptMacro.java:277)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:209)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:169)
	... 101 more
Caused by: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getContent() on null object
	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:323)
	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:116)
	... 104 more
Caused by: java.lang.NullPointerException: Cannot invoke method getContent() on null object
	at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:77)
	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:45)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
	at org.codehaus.groovy.runtime.callsite.NullCallSite.call(NullCallSite.java:32)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
	at com.xpn.xwiki.api.Document$getContent.call(Unknown Source)
	at Script56.run(Script56.groovy:13)
	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:320)
	... 105 more