A blank white page when accessing your self-hosted Prefect UI typically indicates one of several issues. Let's troubleshoot this systematically: 1. Check the URL Configuration: - You're using

prefectUiApiUrl: <https://my-prefect-server.com/api>

- Make sure you're accessing the base URL (

<https://my-prefect-server.com>

) in your browser, not the

/api

endpoint - The

/api

path is for the API server, not the UI itself 2. Verify Network Configuration: - Ensure your Kubernetes ingress is properly configured to handle both the UI and API paths - The UI needs to access the API endpoint, so both paths must be properly routed - Check if your browser's developer tools (F12) show any network errors or failed requests 3. Pod Health Check: Run these commands to verify your deployment status:

bash
   kubectl get pods -n <your-namespace>
   kubectl describe pod <prefect-server-pod-name> -n <your-namespace>
   kubectl logs <prefect-server-pod-name> -n <your-namespace>

4. Browser Troubleshooting: - Try a hard refresh (Ctrl+F5 or Cmd+Shift+R) - Clear your browser cache - Try a different browser - Check the browser's developer console (F12) for JavaScript errors 5. CORS Configuration: - Ensure your ingress or API gateway is properly configured to handle CORS - The UI needs to make API calls, so CORS headers must be properly set 6. SSL/TLS: - If you're using HTTPS, ensure your certificates are valid and properly configured - Check if there are any certificate errors in your browser's security panel If these steps don't resolve the issue, you can try: 1. Port-forwarding directly to the service to rule out ingress issues:

bash
   kubectl port-forward svc/prefect-server 4200:4200 -n <your-namespace>

Then access

<http://localhost:4200>

2. Check the actual response from the API:

bash
   curl -v <https://my-prefect-server.com/api/health>

This should return a successful response if the API is working correctly. Would you like me to help you investigate any of these specific areas further?