Found this in /var/log/asterisk/full after reloading asterisk. Could not find anything else on that ext other than it being loaded to the dial plan. This is with 1104 built within extensions module and nothing built in the custom area of configuration file editor.
[2018-05-14 22:00:26] ERROR[17492] config_options.c: Error parsing allow=ulaw,alaw,gsm,g726,g723,speex,g722,silk at line 15 of /etc/asterisk/pjsip.endpoint.conf
[2018-05-14 22:00:26] ERROR[17492] res_sorcery_config.c: Could not create an object of type ‘endpoint’ with id ‘1104’ from configuration file ‘pjsip.conf’
[2018-05-14 22:00:26] ERROR[17492] res_pjsip_config_wizard.c: Unable to load config file ‘pjsip_wizard.conf’