Question about Privite server

me and my freind crating an emulator Server for fun (freinds ) and
whene i Enter My accuont and Pressing STart on the Cher it gives me ????????? error
(whene i press Start on the cher to enter the game )

press search and find the guide for making sremu server
dont spam this forum so much with useless questions,that have been answered several times.

also,its the wrong section,try asking on private server section