Dnf/Yum commands fails with error "could not load PEM client certificate, OpenSSL error"

Issue

• Unable to run yum/dnf command as it fails with error:

  # dnf update
  Updating Subscription Management repositories.
  Red Hat Enterprise Linux 9 for x86_64 - AppStream (RPMs)                                                                      0.0  B/s |   0  B     00:00
  Errors during downloading metadata for repository 'rhel-9-for-x86_64-appstream-rpms':
    - Curl error (58): Problem with the local SSL certificate for https://cdn.redhat.com/content/dist/rhel9/9/x86_64/appstream/os/repodata/repomd.xml [could not load PEM client certificate, OpenSSL error error:0480006C:PEM routines::no start line, (no key found, wrong pass phrase, or wrong file format?)]
  Error: Failed to download metadata for repo 'rhel-9-for-x86_64-appstream-rpms': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried