Missing Lua documentation is a big problem, see T225497, too.

@hoo could you have a look please?

This is possibly related to stashed edits, we might need to reset the limit on parser init, but that needs to be tested.

Leaving to be prioritized in the product column

@RolandUnger Do you have an example page that this is happening on?
That will help us figure out exactly what is going on here.

(Quick not that this error was mentioned in https://www.wikidata.org/wiki/Wikidata:Project_chat#Countries_vs._sovereign_states)

This might be related to T354647, so I'm adding that as a subtask.

I took a really quick look at this to try and at least describe / make it possible to replicate the issue. I believe it's simply related to calling (or rather loading?) this function (independent of the parameters) >3 times.

I tried to knock together a very simple reproduction on test wikidata. See https://test.wikidata.org/wiki/Wikidata:T226925 (vs https://test.wikidata.org/w/index.php?title=Wikidata:T226925&oldid=685688) and the module it invokes https://test.wikidata.org/wiki/Module:T226925-failure / https://test.wikidata.org/wiki/Module:T226925-success.