This is the known issue for cyber panel when you try to install on centOS7

warning: /var/cache/yum/x86_64/7/CyberPanel/packages/perl-Git-2.17.0-1.el7.lux.noarch.rpm: Header V4 DSA/SHA1 Signature, key ID 53e4e7a9: NOKEY
Retrieving key from https://rep.cyberpanel.net/RPM-GPG-KEY-cyberpanel


The GPG keys listed for the "CyberPanel" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.


Failing package is: perl-Git-2.17.0-1.el7.lux.noarch

to fix this

you need to disable the cyberpanel repo

login as root to your server

nano /etc/yum.repos.d/CyberPanel.repo

change gpgcheck=1 to gpgcheck=0

chattr +i /etc/yum.repos.d/CyberPanel.repo

then try again to install

after installation if you wish to release the file again 

chattr -i /etc/yum.repos.d/CyberPanel.repo
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