to add on to the question, the mongodb is installed in another server.

Solution: Closing and opening the syracuse installer somehow works.

Unusure actual cause.

Additional notes:

Firewall turned off.

From syracuse server, have confirmed through manual mongosh access with mongodb's TLS certificate provided in PEM format. OK to access.

Hi Chung Heng, 

solution tested is working.  We can procced to do installation.  Thanks