NetAlertX/docs/WEB_UI_PORT_DEBUG.md

Debugging inaccessible UI

When opening an issue please:

1. Include a screenshot of what you see when accessing HTTP://<your rpi IP>/20211 (or your custom port)
2. Follow steps 1, 2, 3, 4 on this page
3. Execute the following in the container to see the processes and their ports and submit a screenshot of the result:
   1. sudo apt-get install lsof
   2. sudo lsof -i
4. Try running the nginx command in the container
   1. if you get nginx: [emerg] bind() to 0.0.0.0:20211 failed (98: Address in use) try using a different port number