Hi everyone, Special Bonita Development Team 
I have problem from 7.113 until 2021.1 In Groovy Editor! (in Community version)
At first time when try to open groovy script in any place and try to use "Code Completion" or hotkey 'Control+Space in MacOS' i receive this error , and so when try again it works correctly!?
Error Image file : https://pasteboard.co/JNZCVyE.png
Please guide me 
Best Regards,
Ali
I will do it, thanks for your attention 
@romain.bioteau
Hi!
Can you share the log Studio files to help us investigate the issue ?
Also don’t forget that we have a bug tracker for this kind of feedbacks !
I’ll be glad to help.
Romain
Hi @romain.bioteau
That's link cool for report bug issue 
Just we have studio log for this problem :
!ENTRY org.eclipse.jdt.ui 2 0 2021-02-12 17:31:35.545
!MESSAGE The 'Groovy Code Completions' proposal computer from the 'org.codehaus.groovy.eclipse.codeassist' plug-in did not complete normally. The extension has thrown a runtime exception.
!STACK 0
java.util.ConcurrentModificationException
at java.base/java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
at java.base/java.util.LinkedList$ListItr.next(Unknown Source)
at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1184)
at org.eclipse.jdt.groovy.core.util.DepthFirstVisitor.visitClass(DepthFirstVisitor.java:169)
at org.codehaus.groovy.eclipse.codeassist.requestor.CompletionNodeFinder.visitClass(CompletionNodeFinder.java:177)
at org.eclipse.jdt.groovy.core.util.DepthFirstVisitor.visitModule(DepthFirstVisitor.java:135)
at org.codehaus.groovy.eclipse.codeassist.requestor.CompletionNodeFinder.findContentAssistContext(CompletionNodeFinder.java:118)
at org.codehaus.groovy.eclipse.codeassist.requestor.GroovyCompletionProposalComputer.createContentAssistContext(GroovyCompletionProposalComputer.java:280)
at org.codehaus.groovy.eclipse.codeassist.requestor.GroovyCompletionProposalComputer.computeCompletionProposals(GroovyCompletionProposalComputer.java:207)
at org.eclipse.jdt.internal.ui.text.java.CompletionProposalComputerDescriptor.computeCompletionProposals(CompletionProposalComputerDescriptor.java:345)
at org.eclipse.jdt.internal.ui.text.java.CompletionProposalCategory.computeCompletionProposals(CompletionProposalCategory.java:340)
at org.eclipse.jdt.internal.ui.text.java.ContentAssistProcessor.collectProposals(ContentAssistProcessor.java:333)
at org.eclipse.jdt.internal.ui.text.java.ContentAssistProcessor.computeCompletionProposals(ContentAssistProcessor.java:289)
at org.eclipse.jface.text.contentassist.ContentAssistant$2.lambda$0(ContentAssistant.java:2015)
at java.base/java.util.Collections$SingletonSet.forEach(Unknown Source)
at org.eclipse.jface.text.contentassist.ContentAssistant$2.run(ContentAssistant.java:2014)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:2011)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:573)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.lambda$0(CompletionProposalPopup.java:503)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:72)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:498)
at org.eclipse.jface.text.contentassist.ContentAssistant$AutoAssistListener.lambda$0(ContentAssistant.java:380)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4124)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3791)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
at org.eclipse.jface.window.Window.open(Window.java:799)
at org.bonitasoft.studio.expression.editor.viewer.ExpressionViewer.openEditDialog(ExpressionViewer.java:523)
at org.bonitasoft.studio.expression.editor.viewer.ExpressionViewer.editControlSelected(ExpressionViewer.java:348)
at org.bonitasoft.studio.expression.editor.viewer.ExpressionViewer$2.handleEvent(ExpressionViewer.java:324)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4385)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3789)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
at org.eclipse.jface.window.Window.open(Window.java:799)
at org.bonitasoft.studio.data.ui.property.section.control.ProcessDataViewer.addData(ProcessDataViewer.java:120)
at org.bonitasoft.studio.data.ui.property.section.control.DataViewer$3.widgetSelected(DataViewer.java:233)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4385)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3789)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1158)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1047)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:658)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154)
at org.bonitasoft.studio.application.BonitaStudioApplication.createAndRunWorkbench(BonitaStudioApplication.java:137)
at org.bonitasoft.studio.application.BonitaStudioApplication.start(BonitaStudioApplication.java:100)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1447)
As a workaround I suggest trying to setup the content assist preferences like this: https://pasteboard.co/JO1w7l8.png
To open the eclipse preferences, Click on preferences in the toolbar or Edit > Preferences and select Eclipse
I will do it, thanks for your attention
