Lua error in Module:languages at line 542: Please specify a language or etymology language code in the first parameter. The value "pgmc" is not valid..

Backtrace:

(tail call): ?
[C]: in function "error"
Module:languages:43: in function "err"
Module:languages:77: in function "err"
Module:languages:542: in function "getByCode"
Module:links/templates:61: 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]: ?

Template:Av-pgmc