every 1 seconds:

    loop all players:

        if {스코어보드.%loop-player%} is true:

            wipe loop-player's sidebar

            set name of sidebar of loop-player to "&b&l좀비 야생 서버"

            set score "&e=============" in sidebar of loop-player to 9

            set score " " in sidebar of loop-player to 8

            set score " 접속자 수 : %number of all players%" in sidebar of loop-player to 7

            set score "  " in sidebar of loop-player to 6

            set score " 소지금 : %loop-player's money%" in sidebar of loop-player to 5

            set score "   " in sidebar of loop-player to 4

            set score " 죽은 횟수 : %{죽은수.%loop-player%}%" in sidebar of loop-player to 3

            set score "    " in sidebar of loop-player to 2

            set score "&e============= " in sidebar of loop-player to 1

variables:

    {죽은수.%player%} = 0

on death:

    add 1 to {죽은수.%player%}

command /스코어보드 [<string>]:

    trigger:

        if arg 1 is "켜기":

            set {스코어보드.%player%} to true

            message "&e스코어보드가 활성화되었습니다."

        if arg 1 is "끄기":

            set {스코어보드.%player%} to false

            message "&e스코어보드가 비활성화되었습니다."

            wipe player's sidebar        

이 구문중에서 

on death:

    add 1 to {죽은수.%player%} 이부분이 

[Skript] Line 20: (스코어보드.sk)

[04:33:02] [Server thread/INFO] [Console/]:     Use 'attacker' and/or 'victim' in damage/death events

[04:33:02] [Server thread/INFO] [Console/]:     Line: add 1 to {죽은수.%player%}

이렇게 에러 뜨는데  죽인사람? 을 설정해야하나요?