I’m running a PHP CodeIgniter application on an Azure App Service, and it has been working perfectly until recently. Now, I’m encountering a 404 Not Found – nginx/1.24.0 error.

Here’s a bit more detail:

Platform: Azure App Service
Web Server: nginx/1.24.0
Framework: PHP CodeIgniter

1. Checked the application logs: No specific errors related to the 404 issue.
2. Verified the deployment: All files seem to be in place, and no changes were made recently.
3. Checked nginx configuration: No changes, and it appears to be correctly configured.
4. Restarted the service: Tried restarting the Azure App Service but the issue persists.
5. Azure diagnostics: No unusual resource usage or errors reported.