Dedicated server with advanced sessions not showing up

Hi so i have recently managed to make a dedicated server using a tutorial online, i am trying to make it so the dedicated server creates an advanced session using the create advanced session node.

whenever i launch the dedicated server i also get these warnings

[2018.04.01-05.06.09:696] 55]LogOnline: Warning: STEAM: Server setting ,SESSIONFLAGS:683 overflows Steam SetGameTags call
[2018.04.01-05.06.09:696] 55]LogOnline: Warning: STEAM: Server setting ,ServerName_s:Test overflows Steam SetGameTags call

any help is greatly appreciated
if there is anything else like a screen shot etc you need just reply and ill will try get back as soon as i can