Lua error: Parameter 1 is required..

Backtrace:

(tail call): ?
[C]: in function "error"
Module:parameters:631: in function "params_list_error"
Module:parameters:1750: ?
(tail call): ?
Module:parameter_utilities:1141: in function "parse_list_with_inline_modifiers_and_separate_params"
Module:IPA/templates:31: in function "chunk"
mw.lua:527: ?
(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]: ?

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Chiingimec