[Multilingual] MLZ fails to update Word 2007 document

When updating a document using multilingual style ( https://github.com/NovemberZulu/GOST-Numeric-style-for-MLZ/blob/master/gost-r-7-0-5-2008-numeric-en-ru.csl ), Zotero fails with message "Zotero experienced an error updating your document. this.locale[this.opt.lang] is undefined". Please see debug log D722165224 for details.
Workaround: set citation style to (any) single-lingual and then change it back to multilingual, bibliography is updated correctly in this case. Subsequent manual updating still fail with the same error message.

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