Plugins

I'm running a clean CentOS 7.9
selinux disabled
firewalld disabled
yum -y localinstall https://yum.theforeman.org/releases/2.2/el7/x86_64/foreman-release.rpm
yum -y localinstall https://fedorapeople.org/groups/katello/releases/yum/3.17/katello/el7/x86_64/katello-repos-latest.rpm
yum -y localinstall https://yum.puppet.com/puppet6-release-el-7.noarch.rpm
yum -y install epel-release centos-release-scl-rh
yum -y update
reboot
yum -y install katello
foreman-installer --scenario katello

foreman 2.2.1
katello 3.17.1
puppetserver 6.14.1

When I try to install the default hostgroup plugin, I'm getting an error:

foreman-installer --noop -v --enable-foreman-plugin-default-hostgroup
[ INFO 2020-12-06T19:17:09 verbose] Executing hooks in group pre_migrations
[ INFO 2020-12-06T19:17:09 verbose] All hooks in group pre_migrations finished
[ INFO 2020-12-06T19:17:09 verbose] Executing hooks in group boot
[ INFO 2020-12-06T19:17:09 verbose] All hooks in group boot finished
[ INFO 2020-12-06T19:17:09 verbose] Executing hooks in group init
[ INFO 2020-12-06T19:17:09 verbose] All hooks in group init finished
[ INFO 2020-12-06T19:17:09 verbose] Loading default values from puppet modules...
[ INFO 2020-12-06T19:17:09 verbose] ... finished
[ INFO 2020-12-06T19:17:09 verbose] Executing hooks in group pre_values
[ INFO 2020-12-06T19:17:09 verbose] All hooks in group pre_values finished
[ INFO 2020-12-06T19:17:09 verbose] Running installer with args [["--noop", "-v", "--enable-foreman-plugin-default-hostgroup"]]
[ INFO 2020-12-06T19:17:09 verbose] Executing hooks in group pre_validations
[ INFO 2020-12-06T19:17:10 verbose] All hooks in group pre_validations finished
[ INFO 2020-12-06T19:17:10 verbose] Running validation checks
[ERROR 2020-12-06T19:17:10 verbose] Parameter foreman-plugin-default-hostgroup-hostgroups invalid: Elements of the array are invalid: Hash value elements are invalid: nil is not a valid hash
Error during configuration, exiting
[ INFO 2020-12-06T19:17:10 verbose] Installer finished in 3.276210192 seconds