EasyApache 4 does not report yum/dnf errors during review stage: cPanel v120 and later

Symptoms

EasyApache 4 doesn't show package conflicts during the provision process. It will report:

Please review the following list of packages you are about to install by provisioning this profile.

There are no packages to be installed.

Description

The issue is related to yum/dnf conflicts not being reported by the UI.

We've opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-45797. Follow this article to receive an email notification when a solution is published in the product. 

Workaround

You can review the error in the cPanel error log when it occurs.

Where can I view the cPanel & WHM error logs?