https://docs.fedoraproject.org/en-US/quick-docs/creating-and-using-a-live-installation-image/#_downloading_fedora

states:

a) dnf install livecd-tools spin-kickstarts

there is no spin-kickstarts package

1. dnf install spin-kickstart*
   Aktualisiere und lade Paketquellen:
   Paketquellen geladen.
   Auflösen der Transaktion fehlgeschlagen:
   Keine Übereinstimmung für Argument: spin-kickstart*
   Sie können versuchen, folgendes der Befehlszeile hinzuzufügen:
   --skip-unavailable, um nicht-verfügbare Pakete zu überspringen

b) use fedora-live-workstation.ks file to build live cds..

does not work, as it refers to a file "fedora-live-base.ks" which IS IN NO PACKAGE of Fedora 42.

$ sudo livecd-creator recovery.ks
[sudo] Passwort für linuxamdienstag:
kickstart error: Failed to parse kickstart file 'recovery.ks' : The following problem occurred on line 0 of the kickstart file:

Unable to open input kickstart file: Error opening file: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'fedora-live-base.ks'

Conclusion:

The entire page about livecd-creator is highly outdated and should be rewritten asap.

I consider this real bad luck, as next tuesday we wanted to create the Fedora Recovery ISO for the upcoming new Fedora feature of having a recovery & repair partition.