rhui-manager migrate command fails

Issue

rhui-manager migrate command fails.

# rhui-manager migrate --remote_system_user *** --hostname ******* --password ******* --keyfile_path /root/.ssh/id_rsa_rhua --force

PLAY [Migrate Certs, Red Hat Repo List and Custom Repo Data From Remote RHUIv3] ***********************************************
 <snip>
TASK [debug] ******************************************************************************************************************
ok: [mainte@localhost] => {
    "output.stdout_lines": [
        "Repo rh-gluster-3-for-rhel-7-server-rhui-rpms-7Server-x86_64 already exists",
        "... listings loaded"
    ]
}

TASK [Regenerate pulp_webserver SSL cert with the migrated in CA cert] ********************************************************
[WARNING]: sftp transfer mechanism failed on [mainte@localhost]. Use ANSIBLE_DEBUG=1 to see detailed information
fatal: [mainte@localhost]: FAILED! => {"changed": false, "msg": "Can't detect any of the required Python libraries cryptography (>= 1.6) or PyOpenSSL (>= 0.15)"}

PLAY RECAP ********************************************************************************************************************
mainte@localhost           : ok=4    changed=2    unreachable=0    failed=1    skipped=1    rescued=0    ignored=1