Understanding this term helps you:
If you’re following a tutorial that uses port 11501 , they chose it arbitrarily. You can replace it with any free port. localhost11501 link
: Open your browser and type http://localhost:11501 . If it says "Connection Refused," the software is definitely not running. Understanding this term helps you: If you’re following
Alternatively, stop the application properly (e.g., press Ctrl+C in the terminal where the dev server is running). stop the application properly (e.g.
Tools for ESP32, Arduino, or Raspberry Pi emulators sometimes use port 11501 for web-based configuration interfaces.