Windows 10 - !MESSAGE org.eclipse.swt.SWTException: 'tinyMCE' is undefined message

In Windows 10, not able to open Email template and also Web Services pretty field not working.

In Katalon log file displaying below exception message. Immediate fix is required please.

!ENTRY org.eclipse.jface 4 0 2018-11-28 22:43:56.373
!MESSAGE org.eclipse.swt.SWTException: ‘tinyMCE’ is undefined
!STACK 0
org.eclipse.swt.SWTException: ‘tinyMCE’ is undefined
at org.eclipse.swt.browser.WebBrowser$EvaluateFunction.function(WebBrowser.java:192)
at org.eclipse.swt.browser.WebSite.Invoke(WebSite.java:833)
at org.eclipse.swt.browser.WebSite$7.method6(WebSite.java:184)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:119)
at org.eclipse.swt.internal.ole.win32.COM.VtblCall(Native Method)
at org.eclipse.swt.internal.ole.win32.IDispatch.Invoke(IDispatch.java:64)
at org.eclipse.swt.ole.win32.OleAutomation.invoke(OleAutomation.java:572)
at org.eclipse.swt.ole.win32.OleAutomation.invoke(OleAutomation.java:535)
at org.eclipse.swt.browser.IE.execute(IE.java:1234)
at org.eclipse.swt.browser.WebBrowser.evaluate(WebBrowser.java:436)
at org.eclipse.swt.browser.WebBrowser.evaluate(WebBrowser.java:395)
at org.eclipse.swt.browser.Browser.evaluate(Browser.java:663)
at org.eclipse.swt.browser.Browser.evaluate(Browser.java:610)
at com.kms.katalon.composer.execution.settings.EmailTemplatePage.getHtmlMessage(EmailTemplatePage.java:87)
at com.kms.katalon.composer.execution.settings.EmailTemplatePage.performOk(EmailTemplatePage.java:114)
at org.eclipse.jface.preference.PreferenceDialog$8.run(PreferenceDialog.java:905)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.preference.PreferenceDialog.okPressed(PreferenceDialog.java:889)
at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(PreferenceDialog.java:230)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:618)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4418)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4236)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3824)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:818)
at org.eclipse.jface.window.Window.open(Window.java:794)
at com.kms.katalon.composer.project.handlers.SettingHandler.execute(SettingHandler.java:166)
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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:282)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:264)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:488)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:433)
at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.handleWidgetSelection(AbstractContributionItem.java:454)
at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem$3.handleEvent(AbstractContributionItem.java:482)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4418)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4236)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3824)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at com.kms.katalon.core.application.Application.internalRunGUI(Application.java:120)
at com.kms.katalon.core.application.Application.runGUI(Application.java:105)
at com.kms.katalon.core.application.Application.start(Application.java:63)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
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:673)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
Warning: NLS missing message: COMMAND_NAME_OPEN in: com.kms.katalon.composer.components.impl.constants.composerComponentsImplMessages
Warning: NLS unused message: Key in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages
Warning: NLS unused message: PA_LBL_REST_PARAMS in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages
Warning: NLS missing message: PA_ERROR_MSG_UNABLE_TO_SAVE_PART in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages
Warning: NLS missing message: WIEW_TITLE_SWAGGER in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages
Warning: NLS missing message: WIEW_TITLE_WSDL in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages
Warning: NLS missing message: VIEW_DIA_MSG_CREATE_NEW_WEBSERVICE_REQ_SWAGGER in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages
Warning: NLS missing message: VIEW_DIA_MSG_CREATE_NEW_WEBSERVICE_REQ_WSDL in: com.kms.katalon.composer.webservice.constants.composerWebserviceMessages

Because of this issue not able use Katalon Studio below features

1. Not able to edit Email template
2. Not displaying Web Services response in Pretty text area
3. Variable script mode [ 5.9 feature ]
4. Profile script view [ 5.9 feature]

Please an immediate fix or work around is required. Thanks