What does this mean?

[KiLLsTeaLz]

Hey everyone, Okay I was able to work commands for admin, Mani only, I was wondering when I type @menu and press 1,2,3,4, etc., It would disappear. I was getting ticked of until I realized it said "
cl_restrict_server_commands prevented server running command: cmd". Does anyone knoe what it is? Plus I was able to work it my typing @slay "person's name" and it worked. I got other troubles right now but right now I am asking this.

[Drocona]

type "cl_restrict_server_commands 0" in the client console or enter it in the user.cfg or autoexec.cfg