# Groovy-Eclipse Type Inferencing: Error visiting method run in class Script1619137698459 **URL:** \ **Category:** Bug Report\ **Tags:** katalon-studio, bugs-report\ **Created:** [April 23, 2021, 2:44am UTC](https://forum.katalon.com/t/groovy-eclipse-type-inferencing-error-visiting-method-run-in-class-script1619137698459/54103 "2021-04-23T02:44:58Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [April 23, 2021, 2:44am UTC](https://forum.katalon.com/t/groovy-eclipse-type-inferencing-error-visiting-method-run-in-class-script1619137698459/54103/1 "2021-04-23T02:44:58Z")
Katalon Studio 7.9.1 Mac OS 11.2.3 While I worked on a small project, Katalon Studio suddenly got frozen; not responding at all. All I could do was to terminate KS forcibly. Recently I experience this freeze once or twice a day. I expecience this freeze when I give click KS display, possibly on Test Case script mode editor. I do not find the script having any fault which triggers KS to get crazy. I attach the zip of the project, and .log - [katalon-studio-texts-diff.zip](https://forum.katalon.com/uploads/short-url/gVTMUQRJcdEyhdzvYovWeu3FRa6.zip) (214.2 KB) - [katalon.log](https://forum.katalon.com/uploads/short-url/ulzjcy3YN1Uei1JQkgtknvpxSuB.log) (9.5 KB) In the log, I could find a NullPointerException was raised: ```auto !MESSAGE Groovy-Eclipse Type Inferencing: Error visiting method run in class Script1619137698459 !STACK 0 java.lang.NullPointerException at org.codehaus.groovy.ast.ClassHelper.getUnwrapper(ClassHelper.java:325) ... ``` ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [May 2, 2021, 3:56am UTC](https://forum.katalon.com/t/groovy-eclipse-type-inferencing-error-visiting-method-run-in-class-script1619137698459/54103/2 "2021-05-02T03:56:05Z")
KS7.9.1 freezed again. ```auto !ENTRY org.eclipse.e4.ui.workbench 4 0 2021-05-02 12:48:25.448 !MESSAGE !STACK 0 java.lang.NullPointerException at com.kms.katalon.composer.components.transfer.EntityTransfer.javaToNative(EntityTransfer.java:41) at org.eclipse.swt.dnd.DragSource.pasteboard_provideDataForType(DragSource.java:740) at org.eclipse.swt.dnd.DragSource.dragSourceProc(DragSource.java:532) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSPasteboard.dataForType(NSPasteboard.java:40) at org.eclipse.swt.dnd.DropTarget.drop(DropTarget.java:697) at org.eclipse.swt.dnd.DropTarget.outlineView_acceptDrop_item_childIndex(DropTarget.java:741) at org.eclipse.swt.dnd.DropTarget.dropTargetProc(DropTarget.java:466) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.dnd.DropTarget.dndCallSuper(DropTarget.java:210) at org.eclipse.swt.dnd.DropTarget.performDragOperation(DropTarget.java:734) at org.eclipse.swt.dnd.DropTarget.dropTargetProc(DropTarget.java:451) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235) at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1146) at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2156) at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1138) at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2621) at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2123) at org.eclipse.swt.widgets.Display.windowProc(Display.java:6012) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235) at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2150) at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2401) at org.eclipse.swt.widgets.Display.windowProc(Display.java:6136) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5386) at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5522) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:117) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3786) 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 com.kms.katalon.core.application.WorkbenchApplicationStarter.start(WorkbenchApplicationStarter.java:23) at com.kms.katalon.application.Application.runGUI(Application.java:191) at com.kms.katalon.application.Application.start(Application.java:102) 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 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) 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) ``` ---
**Author:** ![system](https://europe1.discourse-cdn.com/katalon/original/3X/d/5/d55596ab02785a255798e87ede769734747b30c4.svg) [@system](https://forum.katalon.com/u/system)\ **Post date:** [April 27, 2022, 4:30pm UTC](https://forum.katalon.com/t/groovy-eclipse-type-inferencing-error-visiting-method-run-in-class-script1619137698459/54103/3 "2022-04-27T16:30:29Z")
Automatically bumped on April 27, 2022, 4:30pm UTC ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [April 27, 2022, 11:54pm UTC](https://forum.katalon.com/t/groovy-eclipse-type-inferencing-error-visiting-method-run-in-class-script1619137698459/54103/4 "2022-04-27T23:54:37Z")
I don’t see this error in ver8.x ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [April 27, 2022, 11:54pm UTC](https://forum.katalon.com/t/groovy-eclipse-type-inferencing-error-visiting-method-run-in-class-script1619137698459/54103/5 "2022-04-27T23:54:41Z")
Closed on April 27, 2022, 11:54pm UTC