Board Thread:Lua Help/@comment-5068292-20150203145858

Hi, I've created a lua-based infobox module (http://health-and-medicine.wikia.com/wiki/Module:Infobox) and template (http://health-and-medicine.wikia.com/wiki/Template:Infobox_lua) on my Wiki and it gave me this error:

[C]: in function "error" mw.html.lua:253: in function "addClass" Module:Infobox:233: in function "addClass" (tail call): ? mw.lua:425: ?

Does anybody know how I could overcome this error? 