Expected behavior

Test working correctly

Actual behavior

If user does not fill filename for View Result Tree then test does not start:
Image
After clicks Append to existing file or Overwrite existing file user will see this in console log:
2025年11月19日 07:54:16,745 ERROR o.a.j.g.a.AbstractAction: Could not delete existing file C:\Users\User\Desktop\apache-jmeter-5.6.3\bin
Test wil not start

Steps to reproduce the problem

1. Install Java 25.0.1
2. Install JMeter 5.6.3
3. Run JMeter with UI
4. Add Thred Group
5. Add View Results Tree
6. Run test

JMeter Version

5.6.3

Java Version

openjdk version "25.0.1" 2025年10月21日 LTS

OS Version

Microsoft Windows [Version 10.0.26200.7171]