The Lua function getRepresentations for lexemes gives an error on some forms.
Using the debug console on https://www.wikidata.org/w/index.php?title=Module:Sandbox&action=edit:
This line
mw.logObject(mw.wikibase.getEntity("L7-F4"):getRepresentations())
gives
table#1 {
table#2 {
"cat",
"en",
},
}This line, however
mw.logObject(mw.wikibase.getEntity("L1044310-F14"):getRepresentations())
gives
Lua error in mw.wikibase.lexeme.entity.form.lua at line 56: bad argument #1 to 'pairs' (table expected, got nil). Backtrace: [C]: in function "pairs" mw.wikibase.lexeme.entity.form.lua:56: in function "getRepresentations" console input:8: ? [C]: ?