Bug 2543869

---[ System & Environment Information ]---
OS: Fedora Linux 45 (Budgie Atomic Prerelease)
Anaconda version: 45.27
Anaconda UI version: 86

System: Libvirt KVM based VM; 8 CPUs / 8GiB RAM / 120GiB Storage
Using Remote WebUI installer from a Firefox browser on host system. Installing over an existing Fedora install using Erase Disk.

journal.log and screenshot of error dialogue to be attached.

All details that are completed during the installation configuration are retained/recalled on refreshing the Remote WebUI, but on proceeding through each page again an error is generated on reaching the Installation Method page.

Reproducible: Always

Steps to Reproduce:
1. Start the Budge Atomic installer with inst.webui.remote and inst.webui.remote.pin=[pin]
2. Once started, connect to the installer in a web browser.
3. Complete the configuration up to the review page.
4. On the review page, press F5 to refresh the remote installer. This will take you back to the start of the installer wizard.
5. Proceed through the pages again, retaining any options already set, until the Installation Method page.
Actual Results:
On proceeding to the Installation Method page, an error with no error details is generated, requesting a bug report.

Expected Results:
The Installation Method page is shown with previously set configuration, and the user can continue to the end of the installation and start installation.

Additional Information:
Have not tested closing and reopening the browser window (reconnect with entering pin again), opening a session from a different client (or a private window) or loss of network connection to the installer host, but I would expect the same issue occurs there. Browser page Refresh is probably the easiest way to produce the issue in any case.

This occurs with the Erase Disk option selected where there is an existing Fedora installation, but I haven't confirmed whether it occurs with any other options as well.

A clean run through to summary once before refreshing and then a clean second pass is the case that reproduces the issue. Refreshing at other points throughout may cause it to proceed as normal.