Email not working with 123-reg and discourse on hosted Virtual Private Server - all other aspects appear to

rebuilt the app

now have this in ./doctor-discourse

Testing sending to myemail@mydomain.co.uk using smtp.123-reg.co.uk:465, username:myemail@mydomain.co.uk with true auth.
======================================== ERROR ========================================
UNEXPECTED ERROR

undefined method `to_sym’ for true:TrueClass
Did you mean? to_s