php - Failed to download metadata for repo 'InstallMedia-BaseOS' on Centos 8

Question

i try to upgrade php from 7.3 to 7.4 in centos 8 but i accidentally run this command which is

yum clean all

and when i try to run any command related like

 yum update -y

It return error like

Failed to download metadata for repo 'InstallMedia-BaseOS'

Error:Failed to download metadata for repo 'InstallMedia-BaseOS'

I try this command which is

sudo rm -r /var/cache/dnf 

but still same . I hope my explaination clear

Answer 1

等待大神答复