Failed to download metadata for repo 'rhel-8-for-x86_64-baseos-rpms'

Good afternoon I am using RED HAT for the first time, and when I am executing a command to update the yum (yum update) I find this error that I can not solve:

[root@srvdevrma1 ~]# yum update
Updating Subscription Management repositories.
Red Hat Enterprise Linux 8 for x86_64 - BaseOS (RPMs) 0.0 B/s | 0 B 00:00
Failed to download metadata for repo 'rhel-8-for-x86_64-baseos-rpms'
Error: Failed to download metadata for repo 'rhel-8-for-x86_64-baseos-rpms'

What can it be or how could it be solved?