问题场景：

使用jmeter保存文件时一直无法保存，然后进入日志中心查看显示：

Uncaught Exception java.lang.IllegalAccessError: class com.github.weisj.darklaf.ui.filechooser.DarkFilePaneUIBridge$DetailsTableModel (in unnamed module @0xfbd1f6) cannot access class sun.awt.shell.ShellFolder (in module java.desktop) because module java.desktop does not export sun.awt.shell to unnamed module @0xfbd1f6 in thread Thread[AWT-EventQueue-0,6,main]. See log file for details.
Uncaught Exception java.lang.NoC

Uncaught Exception java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger in thread Thread[AWT-EventQueue-0,6,main]. See log file for details.

解决方案：

进入jmeter中options->look and feel ->更改外观为system即可，在重新保存文件就OK了