JMeter 5.4 When open testplan Unexpected error

Question

I create a very simple testplan:

1. I save the testplan as MySimpleTestplan.jmx

2. Close JMeter

3. Start JMeter again as: double click on jmeter.bat

4. JMeter starts

5. I browse to MySimpleTestplan.jmx and selects it

6. Unexpected error. Se image below:

7. 

8. I look in log

   WARN o.a.j.g.a.Load: Unexpected error. java.lang.NullPointerException java.lang.NullPointerException: null at java.util.ArrayDeque.addLast(ArrayDeque.java:304) ~[?:?] at java.util.ArrayDeque.add(ArrayDeque.java:495) ~[?:?] at org.apache.jmeter.gui.action.LoadRecentProject.updateRecentFileMenuItems(LoadRecentProject.java:125) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.util.JMeterMenuBar.setProjectFileLoaded(JMeterMenuBar.java:144) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.MainFrame.setProjectFileLoaded(MainFrame.java:330) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.GuiPackage.setTestPlanFile(GuiPackage.java:732) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.action.Load.loadProjectFile(Load.java:136) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.action.Load.loadProjectFile(Load.java:101) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.action.Load.doActionAfterCheck(Load.java:88) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.action.AbstractActionWithNoRunningTest.doAction(AbstractActionWithNoRunningTest.java:44) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:87) ~[ApacheJMeter_core.jar:5.4] at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$0(ActionRouter.java:69) ~[ApacheJMeter_core.jar:5.4] at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313) [?:?] at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770) [?:?] at java.awt.EventQueue$4.run(EventQueue.java:721) [?:?] at java.awt.EventQueue$4.run(EventQueue.java:715) [?:?] at java.security.AccessController.doPrivileged(Native Method) ~[?:?] at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) [?:?] at java.awt.EventQueue.dispatchEvent(EventQueue.java:740) [?:?] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?] at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?] at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?] at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?] 2020-12-09 16:54:04,150 ERROR o.a.j.u.JMeterUtils: Unexpected error - see log for details

My Java version is: javac 11.0.8 JMeter version: 5.4 I'm really stuck here.

Answer 1

Errors are known issues in 5.4 version and will be fixed soon on release 5.4.1, answered by @FelixSchumacher

you hit https://bz.apache.org/bugzilla/show_bug.cgi?id=64957 This regression will be fixed by a release (probably soon), but in the mean time you can try a current build from trunk or a nightly build (https://jmeter.apache.org/nightly.html)

If you don't want to downgrade, take new version from JMeter downloads