Description of problem: dnf install perl-Email-Sender Problem: package perl-Email-Sender-1.300031-9.el8.noarch requires perl(Throwable::Error) >= 0.200003, but none of the providers can be installed - conflicting requests - nothing provides perl(Devel::StackTrace) >= 1.32 needed by perl-Throwable-0.200013-12.el8.noarch (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
'perl(Devel::StackTrace) >= 1.32' is provided by perl-Devel-StackTrace-1:2.03-2.el8 package delivered by Red Hat in CRB repository which you need to enable before using EPEL <https://docs.fedoraproject.org/en-US/epel/#_el8>.