This probably means that you've skipped step 8 of the Server lesson, where you need to assign the TRtcFunctionGroup component to the TRtcServerModule's "FunctionGroup" property (
see step 8 in the Server lesson).
I've noticed that steps 8-9 in that lesson were missnumbered, which might have been the reason for you missing a few. I have fixed this error in the online lesson now, so each step has a correct number.
PS. Source Code for all Quick Start lessons is also available in the "QuickStart" folder inside the RTC SDK package.
Best Regards,
Danijel Tkalcec