Lua error in Module:Wd at line 196: attempt to index field 'wikibase' (a nil value).

Backtrace:

(tail call): ?
Module:Wd:196: in function "new"
Module:Wd:2220: ?
(tail call): ?
mw.lua:525: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:313: in function "dispatch"
MWServer.lua:70: ?
(tail call): ?
mw.lua:175: ?
Module:String:528: in function "_getParameters"
Module:String:245: in function "chunk"
mw.lua:525: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:313: in function "dispatch"
MWServer.lua:70: ?
(tail call): ?
mw.lua:194: in function "old_pairs"
...ribunto/includes/engines/LuaCommon/lualib/mwInit.lua:17: in function "pairs"
Module:Arguments:207: in function "mergeArgs"
Module:Arguments:320: in function "old_pairs"
...ribunto/includes/engines/LuaCommon/lualib/mwInit.lua:17: in function "pairs"
Module:TableTools:94: in function "numKeys"
Module:TableTools:189: in function "compressSparseArray"
Module:Separated_entries:20: ?
(tail call): ?
mw.lua:525: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:313: in function "dispatch"
MWServer.lua:70: ?
(tail call): ?
mw.lua:175: ?
Module:Infobox:526: in function "preprocessArgs"
Module:Infobox:574: in function "parseDataParameters"
Module:Infobox:607: in function "chunk"
mw.lua:525: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:313: in function "dispatch"
MWServer.lua:52: in function "execute"
mw_main.lua:7: in main chunk
[C]: ?

Alessandro Tampieri
]] Alessandro Tampieri by Giulia Papetti]]
Background information
Born	Error: Need valid birth date: year, month, day

Alessandro Tampieri