thanks for your reply.
dnf will at some point completely replace yum. (better faster higher and so on)
good to know.
so the current fix is to disable SELinux?
is this “safe”? X-D
not optimal… but better than always manually starting caddy like this:
runuser -l caddy -c '/usr/local/bin/caddy -conf /etc/caddy/caddy.proxy.config'