Issue Failed to check system configuration

[bobjml]

hello

this morning, i received this alert !

Failed to check system configuration - Yum utility finished with errors. Installation may fail.
dnf.exceptions.RepoError: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

(a resume)

I am not sur what to do. I am on centos 8

Thanks in advance

 

[IgorG]

CentOS 8 reached its end-of-life on December 31st, 2021.
And since January 31st, 2022, repositories for that OS are available only at https://vault.centos.org

In-place conversion of CentOS 8 to AlmaLinux is a recommended way to move from CentOS 8. To convert, download and run AlmaLinux script on a CentOS 8 server.