title: With Jmeter 5.1.1 r1855137, not able to save any script. Getting exceptions in log
body: <p>Environment Details: - 
  Jmeter Version: 
  5.1.1 r1855137</p>
  
  <p>Jave Version: - 
  C:\Users\username>java -version
  java version "1.8.0_212"
  Java(TM) SE Runtime Environment (build 1.8.0_212-b10)
  Java HotSpot(TM) 64-Bit Server VM (build 25.212-b10, mixed mode)</p>
  
  <p>OS:
  Windows 10 Version 1809 (OS Build 17763.557)</p>
  
  <p>Problem Statement: - 
  After creating a test plan, while trying to save it, it's not saving and getting different exceptions.</p>
  
  <p>Below is command prompt output.</p>
  
  <pre><code>================================================================================
  Don't use GUI mode for load testing !, only for Test creation and Test debugging.
  For load testing, use CLI Mode (was NON GUI):
     jmeter -n -t [jmx file] -l [results file] -e -o [Path to web report folder]
  &amp; increase Java Heap to meet your test requirements:
     Modify current env variable HEAP="-Xms1g -Xmx1g -XX:MaxMetaspaceSize=256m" in the jmeter batch file
  Check : https://jmeter.apache.org/usermanual/best-practices.html
  ================================================================================
  Uncaught Exception java.lang.ExceptionInInitializerError. See log file for details.
  Uncaught Exception java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger. See log file for details.
  </code></pre>
  
  <p>Below is Jmeter log.</p>
  
  <pre><code>2019-07-08 09:45:13,969 INFO o.a.j.u.JMeterUtils: Setting Locale to en_EN
  2019-07-08 09:45:13,984 INFO o.a.j.JMeter: Loading user properties from: user.properties
  2019-07-08 09:45:13,985 INFO o.a.j.JMeter: Loading system properties from: system.properties
  2019-07-08 09:45:13,990 INFO o.a.j.JMeter: Copyright (c) 1998-2019 The Apache Software Foundation
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: Version 5.1.1 r1855137
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: java.version=1.8.0_212
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: java.vm.name=Java HotSpot(TM) 64-Bit Server VM
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: os.name=Windows 10
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: os.arch=amd64
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: os.version=10.0
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: file.encoding=Cp1252
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: java.awt.headless=null
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: Max memory     =1073741824
  2019-07-08 09:45:13,991 INFO o.a.j.JMeter: Available Processors =8
  2019-07-08 09:45:13,995 INFO o.a.j.JMeter: Default Locale=English (EN)
  2019-07-08 09:45:13,995 INFO o.a.j.JMeter: JMeter  Locale=English (EN)
  2019-07-08 09:45:13,995 INFO o.a.j.JMeter: JMeterHome=D:\JMeter\apache-jmeter-5.1.1
  2019-07-08 09:45:13,995 INFO o.a.j.JMeter: user.dir  =D:\JMeter\apache-jmeter-5.1.1\bin
  2019-07-08 09:45:13,996 INFO o.a.j.JMeter: PWD       =D:\JMeter\apache-jmeter-5.1.1\bin
  2019-07-08 09:45:13,998 INFO o.a.j.JMeter: IP: 192.168.0.100 Name: USER-HOST FullName: USER-HOST.domain.com
  2019-07-08 09:45:14,193 INFO o.a.j.g.a.LookAndFeelCommand: Installing Darcula LAF
  2019-07-08 09:45:14,208 INFO o.a.j.g.a.LookAndFeelCommand: Using look and feel: com.bulenkov.darcula.DarculaLaf [Darcula]
  2019-07-08 09:45:14,208 INFO o.a.j.JMeter: Setting LAF to: com.bulenkov.darcula.DarculaLaf
  2019-07-08 09:45:14,265 INFO o.a.j.JMeter: Loaded icon properties from org/apache/jmeter/images/icon.properties
  2019-07-08 09:45:15,770 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/html is org.apache.jmeter.protocol.http.parser.LagartoBasedHtmlParser
  2019-07-08 09:45:15,771 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for application/xhtml+xml is org.apache.jmeter.protocol.http.parser.LagartoBasedHtmlParser
  2019-07-08 09:45:15,771 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for application/xml is org.apache.jmeter.protocol.http.parser.LagartoBasedHtmlParser
  2019-07-08 09:45:15,771 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/xml is org.apache.jmeter.protocol.http.parser.LagartoBasedHtmlParser
  2019-07-08 09:45:15,771 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/vnd.wap.wml is org.apache.jmeter.protocol.http.parser.RegexpHTMLParser
  2019-07-08 09:45:15,771 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/css is org.apache.jmeter.protocol.http.parser.CssParser
  2019-07-08 09:45:15,917 INFO o.a.j.e.KeyToolUtils: Exception checking for keytool existence, will return false, try another way.
  2019-07-08 09:45:16,320 INFO o.a.j.e.KeyToolUtils: keytool found at 'C:\Program Files\Java\jre1.8.0_212\bin\keytool'
  2019-07-08 09:45:16,320 INFO o.a.j.p.h.p.ProxyControl: HTTP(S) Test Script Recorder SSL Proxy will use keys that support embedded 3rd party resources in file D:\JMeter\apache-jmeter-5.1.1\bin\proxyserver.jks
  2019-07-08 09:45:16,477 INFO o.a.j.s.FileServer: Default base='D:\JMeter\apache-jmeter-5.1.1\bin'
  2019-07-08 09:45:16,888 WARN o.a.j.g.u.MenuFactory: Could not instantiate class: org.apache.jmeter.protocol.smtp.sampler.gui.SmtpSamplerGui
  java.lang.reflect.InvocationTargetException: null
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_212]
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_212]
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_212]
      at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_212]
      at org.apache.jmeter.gui.util.MenuFactory.getGUIComponent(MenuFactory.java:174) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.util.MenuFactory.initializeMenus(MenuFactory.java:141) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.util.MenuFactory.&lt;clinit&gt;(MenuFactory.java:106) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.control.gui.TestPlanGui.createPopupMenu(TestPlanGui.java:92) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.tree.JMeterTreeNode.createPopupMenu(JMeterTreeNode.java:185) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.EditCommand.doAction(EditCommand.java:46) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:88) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$0(ActionRouter.java:70) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at java.awt.event.InvocationEvent.dispatch(Unknown Source) [?:1.8.0_212]
      at java.awt.EventQueue.dispatchEventImpl(Unknown Source) [?:1.8.0_212]
      at java.awt.EventQueue.access$500(Unknown Source) [?:1.8.0_212]
      at java.awt.EventQueue$3.run(Unknown Source) [?:1.8.0_212]
      at java.awt.EventQueue$3.run(Unknown Source) [?:1.8.0_212]
      at java.security.AccessController.doPrivileged(Native Method) [?:1.8.0_212]
      at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) [?:1.8.0_212]
      at java.awt.EventQueue.dispatchEvent(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.run(Unknown Source) [?:1.8.0_212]
  Caused by: java.lang.NullPointerException
      at javax.swing.plaf.metal.MetalFileChooserUI$IndentIcon.getIconWidth(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.SwingUtilities.layoutCompoundLabelImpl(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.SwingUtilities.layoutCompoundLabel(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicLabelUI.layoutCL(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicLabelUI.getPreferredSize(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComponent.getPreferredSize(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicListUI.updateLayoutState(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicListUI$Handler.valueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.setSelectionInterval(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JList.setSelectedIndex(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicComboPopup.setListSelection(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicComboPopup.access$300(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicComboPopup$Handler.itemStateChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComboBox.fireItemStateChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComboBox.selectedItemChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComboBox.contentsChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.setSelectedItem(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.addItem(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.access$800(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI.doDirectoryChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI.access$1100(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$5.propertyChange(Unknown Source) ~[?:1.8.0_212]
      at java.beans.PropertyChangeSupport.fire(Unknown Source) ~[?:1.8.0_212]
      at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source) ~[?:1.8.0_212]
      at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source) ~[?:1.8.0_212]
      at java.awt.Component.firePropertyChange(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JFileChooser.setCurrentDirectory(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JFileChooser.&lt;init&gt;(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JFileChooser.&lt;init&gt;(Unknown Source) ~[?:1.8.0_212]
      at org.apache.jmeter.protocol.smtp.sampler.gui.SmtpPanel.initComponents(SmtpPanel.java:576) ~[ApacheJMeter_mail.jar:5.1.1 r1855137]
      at org.apache.jmeter.protocol.smtp.sampler.gui.SmtpPanel.&lt;init&gt;(SmtpPanel.java:117) ~[ApacheJMeter_mail.jar:5.1.1 r1855137]
      at org.apache.jmeter.protocol.smtp.sampler.gui.SmtpSamplerGui.makeDataPanel(SmtpSamplerGui.java:190) ~[ApacheJMeter_mail.jar:5.1.1 r1855137]
      at org.apache.jmeter.protocol.smtp.sampler.gui.SmtpSamplerGui.init(SmtpSamplerGui.java:170) ~[ApacheJMeter_mail.jar:5.1.1 r1855137]
      at org.apache.jmeter.protocol.smtp.sampler.gui.SmtpSamplerGui.&lt;init&gt;(SmtpSamplerGui.java:47) ~[ApacheJMeter_mail.jar:5.1.1 r1855137]
      ... 26 more
  2019-07-08 09:45:17,093 INFO o.a.j.s.SampleResult: Note: Sample TimeStamps are START times
  2019-07-08 09:45:17,093 INFO o.a.j.s.SampleResult: sampleresult.default.encoding is set to ISO-8859-1
  2019-07-08 09:45:17,094 INFO o.a.j.s.SampleResult: sampleresult.useNanoTime=true
  2019-07-08 09:45:17,094 INFO o.a.j.s.SampleResult: sampleresult.nanoThreadSleep=5000
  2019-07-08 09:45:22,906 ERROR o.a.j.JMeter: Uncaught exception: 
  java.lang.ExceptionInInitializerError: null
      at org.apache.jmeter.gui.action.Save.computeFileName(Save.java:203) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.Save.doAction(Save.java:165) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:88) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$0(ActionRouter.java:70) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at java.awt.event.InvocationEvent.dispatch(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue.dispatchEventImpl(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue.access$500(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_212]
      at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_212]
      at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue.dispatchEvent(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.run(Unknown Source) [?:1.8.0_212]
  Caused by: java.lang.NullPointerException
      at javax.swing.plaf.metal.MetalFileChooserUI$IndentIcon.getIconWidth(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.SwingUtilities.layoutCompoundLabelImpl(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.SwingUtilities.layoutCompoundLabel(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicLabelUI.layoutCL(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicLabelUI.getPreferredSize(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComponent.getPreferredSize(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicListUI.updateLayoutState(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicListUI$Handler.valueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.DefaultListSelectionModel.setSelectionInterval(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JList.setSelectedIndex(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicComboPopup.setListSelection(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicComboPopup.access$300(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.basic.BasicComboPopup$Handler.itemStateChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComboBox.fireItemStateChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComboBox.selectedItemChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JComboBox.contentsChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.setSelectedItem(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.addItem(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.access$800(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI.doDirectoryChanged(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI.access$1100(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.plaf.metal.MetalFileChooserUI$5.propertyChange(Unknown Source) ~[?:1.8.0_212]
      at java.beans.PropertyChangeSupport.fire(Unknown Source) ~[?:1.8.0_212]
      at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source) ~[?:1.8.0_212]
      at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source) ~[?:1.8.0_212]
      at java.awt.Component.firePropertyChange(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JFileChooser.setCurrentDirectory(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JFileChooser.&lt;init&gt;(Unknown Source) ~[?:1.8.0_212]
      at javax.swing.JFileChooser.&lt;init&gt;(Unknown Source) ~[?:1.8.0_212]
      at org.apache.jmeter.gui.util.FileDialoger.&lt;clinit&gt;(FileDialoger.java:40) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      ... 18 more
  2019-07-08 09:45:53,594 ERROR o.a.j.JMeter: Uncaught exception: 
  java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger
      at org.apache.jmeter.gui.action.Save.computeFileName(Save.java:203) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.Save.doAction(Save.java:165) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:88) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.doActionNow(ActionRouter.java:125) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.AbstractAction.popupShouldSave(AbstractAction.java:77) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.Start.doAction(Start.java:113) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:88) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$0(ActionRouter.java:70) ~[ApacheJMeter_core.jar:5.1.1 r1855137]
      at java.awt.event.InvocationEvent.dispatch(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue.dispatchEventImpl(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue.access$500(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_212]
      at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_212]
      at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventQueue.dispatchEvent(Unknown Source) ~[?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_212]
      at java.awt.EventDispatchThread.run(Unknown Source) [?:1.8.0_212]
  </code></pre>