'str' object has no attribute 'decode' while registering RHEL 8.5 to Red Hat Satellite 6

Issue

• While registering Red Hat Enterprise Linux 8.5, receiving below error:

  Foreman Bootstrap Script
  This script is designed to register new systems or to migrate an existing system to a Foreman server with Katello
  Traceback (most recent call last):
   File "/tmp/bootstrap.py", line 1334, in <module>
     check_rpm_installed()
   File "/tmp/bootstrap.py", line 1018, in check_rpm_installed
     package_name = package['name'].decode('ascii')
  AttributeError: 'str' object has no attribute 'decode'