When following the instructions at https://docs.theforeman.org/3.4/Upgrading_and_Updating/index-katello.html the installation source for CentOS7 / RHEL 7 is documented, but according to FM 3.4 doc, only CentOS 8 / RHEL 8 is supported.
I might have failed to follow all the announcements about dropping support for CentOS 7, but I think it should be more prominently shown.
The documentation should be corrected.
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