Where was Luna Papa filmed?
1999 film by Bakhtyar Khudojnazarov
Luna Papa (1999) was filmed in Khujand, Isfara, Guliston and Arbob Cultural Palace, 4 places named in its Wikipedia article, in Tajikistan. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's article
The Wikipedia article names 4 places. Each links to the sentence that says so.

