Incorrect encoding of the event fields in the mail

ArcSight is installed on CentOS 7

The console interface is in English, but I use the names of rules and filters in Ukrainian.

Letters to the post office are sent using our own velocity templates and additionally the letter contains fields with the names of the rule, but it is not displayed correctly in the letter.

P.S. A similar problem was and is with the content of the fields in the active channel. I used to think it was a connector setup problem.
Thank you in advance