Null exception occured when click on Luke desktop browser button

[wuth]

Description

When I have set my share folder (luncene data) on window,I found that Luke desktop's path browser button occurd null exception.
like path \xxx.xxx.xx.xx\trace . Finally I debug the source code and repair this bug as follow:
java file:OpenIndexDialogFactory.java
function:getLastOpenedDirectory

error:path.getParent()

repair:

   private File getLastOpenedDirectory() {
      List<String> history = prefs.getHistory();
      if (!history.isEmpty()) {
        Path path = Paths.get(history.get(0));
        if (Files.exists(path)) {
          if(path.getParent() != null) {
            return path.getParent().toAbsolutePath().toFile();
          }else {
            return path.toAbsolutePath().toFile();
          }
        }
      }
      return null;
    }

Version and environment details

Luncene 8.11.2 and I have check the newest version code has the same problem.