I cannot install alien | CentOS 8

I've a problem with my CentOS. When I've tried to install alien (el7 package, because el8 isn't available), I got this error (My CentOS has Polish language) [mlodybukk@localhost Pobrane]$ sudo yum install alien Updating Subscription Management repositories. Unable to read consumer identity This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Ostatnio sprawdzono ważność metadanych: 0:01:14 temu w dniu nie, 5 lip 2020, 22:45:38. Błąd: Problem: conflicting requests - nothing provides perl(:MODULE_COMPAT_5.16.3) needed by alien-8.90-3.el7.nux.noarch How can I repair this?