[server] getMyVotedAsks/getAskByIndex : add error response
[server] getMyVotedAsks/getAskByIndex : add error response

JungoKim/umpa,bigheadbb/umpa,luckypapa/umpa,luckypapa/umpa,bigheadbb/umpa,Bongsok/umpa,Bongsok/umpa,bigheadbb/umpa,bigheadbb/umpa,JungoKim/umpa,luckypapa/umpa,JungoKim/umpa,Bongsok/umpa