Registration to Red Hat Satellite 6 server with "os.chmod(path, 0600)" error.

Issue

• While registering Red Hat Enterprise Linux 8 system to Red Hat Satellite 6, subscription-manager command is failing with below error:

    File "/usr/lib64/python3.6/site-packages/rhsmlib/facts/hwprobe.py", line 50, in is_registered_with_classic
      from up2date_client import up2dateAuth
    File "/usr/share/rhn/up2date_client/up2dateAuth.py", line 74
      os.chmod(path, 0600)
                        ^
  SyntaxError: invalid token