Map dont change after vote and stuck on same Map

[LordHISKI]

Hi, since few days i have the Problem, that MapVote dont work (or so)
i always get that error:

[MapVote] lua/mapvote/sv_mapvote.lua:45: bad argument #1 to 'getn' (table expected, got nil)

1. getn - [C]:-1
2. CoolDownDoStuff - lua/mapvote/sv_mapvote.lua:45
3. unknown - lua/mapvote/sv_mapvote.lua:148

Timer Failed! [RAM_MapVote][@lua/mapvote/sv_mapvote.lua (line 127)]

I dont know what to do and i dont find the lua or something on my server