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启动某个ThreadGroup的时候，启动不了

现象

1. 点击start按钮的时候，结果树和汇总报告都没有任何数据。
   

2. 同时，点击右上角的error log
   
   发现有错误信息：
   错误信息如下：

   2025-04-09 10:03:48,009 ERROR o.a.j.g.a.ActionRouter: Error processing org.apache.jmeter.gui.action.Start@16b7862b
   java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0at org.apache.jmeter.gui.action.Start.startEngine(Start.java:189) ~[ApacheJMeter_core.jar:5.6.3]at org.apache.jmeter.gui.action.Start.doAction(Start.java:115) ~[ApacheJMeter_core.jar:5.6.3]at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:83) ~[ApacheJMeter_core.jar:5.6.3]at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$0(ActionRouter.java:65) ~[ApacheJMeter_core.jar:5.6.3]at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313) [?:?]at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770) [?:?]at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721) [?:?]at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715) [?:?]at java.base/java.security.AccessController.doPrivileged(Native Method) ~[?:?]at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) [?:?]at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740) [?:?]at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?]at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?]at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?]at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?]at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?]at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]
   

原因：

1. 在排查过程中，进行了各种设置，都不能生效。

2. 最终发现是，测试计划是有Enable和Disable按钮。现在是Disable的状态
   

3. 同时，Disable的状态，点击start按钮启动的时候，JMeter也不会提示执行计划不是Enable的状态，无法启动。

解决方案

1. 把测试计划，从Disable状态改为Enable状态