mình bị lỗi này. ai giúp mình với!!!!

error: global variable `_OUTPUT' is not a file handle
stack traceback: 1[264]: function `write' [C]
2[254]: method `Table2File' at line 49 [string "\script\vng_lib\files_lib.lua"]
3[246]: method `Write' at line 36 [string "\script\vng_lib\VngTransLog.lua"]
4[244]: method `CallBack' at line 25 [string "/script/activitysys/config/1002/extend.lua"]
5[232]: method `Give' at line 97 [string "/script/lib/awardtype/item.lua"]
6[224]: method `Give' at line 52 [string "\script\lib\awardtemplet.lua"]
7[216]: method `Give' at line 45 [string "\script\lib\awardtemplet.lua"]
8[205]: method `GivByRandom' at line 27 [string "\script\lib\awardtemplet.lua"]
9[197]: method `Give' at line 40 [string "\script\lib\awardtemplet.lua"]
10[189]: function <284:string "/script/activitysys/config/1002/extend.lua"> at line 288
11[186]: function `call' [C]
12[182]: method `exec' at line 50 [string "\script\lib\pfunction.lua"]
13[175]: method `CallFunction' at line 33 [string "/script/activitysys/detailtype/createcompos..."]
14[169]: method `pProductFun' at line 98 [string "/script/activitysys/detailtype/createcompos..."]
15[163]: method `Compose' at line 355 [string "\script\lib\composeex.lua"]
16[158]: function <437:string "\script\lib\composeex.lua"> at line 450
17[155]: function `call' [C]
18[150]: function `g_AskClientNumberBackEx' at line 108 [string "\script\dailogsys\dailogsay.lua"]