The problem with converting russian letters in aliases

Hello,
help please:
The problem is that the Pathauto module creates aliases well, but it doesn't convert russian letters.
For example, instead of "покупка/товар" (wrong), it must be "pokupka/tovar" (right).
I don't need to translate the alias into "purchase/ware".
This problem is throughout the site - nodes, vocabularies, terms, users; although previous versions of Pathauto converted without any problem.

I change i18n-ascii.example.txt file into i18n-ascii.txt, but it didn't help.