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NetAlertX/docs/WEB_UI_PORT_DEBUG.md
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# Debugging inaccessible UI
## 1. Port conflicts
When opening an issue please:
1. Include a screenshot of what you see when accessing `HTTP://<your rpi IP>/20211` (or your custom port)
1. [Follow steps 1, 2, 3, 4 on this page](./DEBUG_TIPS.md)
1. Execute the following in the container to see the processes and their ports and submit a screenshot of the result:
1. `sudo apk add lsof`
1. `sudo lsof -i`
1. 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
![lsof ports](./img/WEB_UI_PORT_DEBUG/container_port.png)
## 2. JavaScript issues
Check for browser console (F12 browser dev console) errors + check different browsers.
## 3. Clear the app cache and cached JavaScript files
Refresh the browser cache (usually shoft + refresh), try a private window, or different browsers. Please also refresh the app cache by clicking the 🔃 (reload) button in the header of the application.
## 4. Disable proxy
If you have any reverse proxy or similar, try disabling it.
## 5. Disable your firewall
If you are using a firewall, try to temporarily disabling it.
## 6. Post your docker start details
If you haven't, post your docker compose/run command.
## 7. Check for errors in your PHP/NGINX error logs
In the container execute:
`cat /var/log/nginx/error.log`
`cat /app/log/app.php_errors.log`
## 8. Make sure permissions are correct
> [!TIP]
> You can try to start the container without mapping the `/app/config` and `/app/db` dirs and if the UI shows up then the issue is most likely related to your file system permissions or file ownership.
Please read the [Permissions troubleshooting guide](./FILE_PERMISSIONS.md) and provide a screesnhot of the permissions and ownership in the `/app/db` and `app/config` directories.