How to resolve katello-configure failing on encoding?

Issue

katello-configure is finishing almost immediately and there is an error in the logs about encoding:

Error: Could not autoload puppet/parser/functions/katello_config_value: unknown encoding name

OR

160602-10:15:27 Error: Could not autoload puppet/parser/functions/katello_config_value: invalid byte sequence in US-ASCII
160602-10:15:27 Error: Could not autoload puppet/parser/functions/katello_config_value: invalid byte sequence in US-ASCII on node sam.example.com
160602-10:15:27 Error: Could not autoload puppet/parser/functions/katello_config_value: invalid byte sequence in US-ASCII on node sam.example.com