This is a regression introduced in the Firefox extension work
ipa-replica-prepare doesn't work on a server upgraded from 2.2 because the FF extension files are not present there.
Also, the UI assumes the files are there, leading to a 404 when trying to configure the browser.
Metadata Update from @pviktori:
- Issue assigned to pviktori
- Issue set to the milestone: FreeIPA 3.0 GA
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