Run Start Server. bat, project blank

After starting Start Server. bat, a pop-up window appears normally, but the localhost: 8080 port is blank. How to solve this problem 

<img width="1671" height="812" alt="Image" src="https://github.com/user-attachments/assets/4f5a4483-1d23-4595-a883-0d6fe88240e2" />
