Problem with russian users names

[vladarts]

Method:

sentry_jira.plugin in handle_user_autocomplete

Error
UnicodeEncodeError: 'ascii' codec can't encode character u'\u0410' in position 0: ordinal not in range(128)

JIRA url
https://xxx.atlassian.net/rest/api/latest/user/assignable/search?issueKey=null&username=