Lua error: bad argument #1 to "get" (not a valid title).

Backtrace:

(tail call): ?
[C]: in function "error"
MWServer.lua:81: ?
(tail call): ?
(tail call): ?
Module:Citation/CS1/Configuration:2320: in function "init"
package.lua:103: ?
(tail call): ?
mw.lua:602: in function "executeModule"
mw.lua:920: in function "loadData"
Module:Citation/CS1:4730: ?
(tail call): ?
mw.lua:678: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:317: in function "dispatch"
MWServer.lua:70: ?
(tail call): ?
mw.lua:251: in function "old_pairs"
...ribunto/includes/Engines/LuaCommon/lualib/mwInit.lua:17: in function "pairs"
Module:Item:15: in function "chunk"
mw.lua:678: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:317: in function "dispatch"
MWServer.lua:70: ?
(tail call): ?
mw.lua:251: 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:For_loop:97: in function "getArgNums"
Module:For_loop:57: in function "getConstants"
Module:For_loop:27: ?
(tail call): ?
mw.lua:678: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:317: in function "dispatch"
MWServer.lua:70: ?
(tail call): ?
mw.lua:232: ?
Module:Arguments:254: ?
Module:Documentation:658: in function "_content"
Module:Documentation:154: ?
(tail call): ?
mw.lua:678: ?
(tail call): ?
[C]: in function "xpcall"
MWServer.lua:99: in function "handleCall"
MWServer.lua:317: in function "dispatch"
MWServer.lua:52: in function "execute"
mw_main.lua:7: in main chunk
[C]: ?