printing voucher is not possible

When I try to print voucher the warning occurs:

There are no voucher mail templates. Please add one in order to print vouchers.

I cannot find what is the cause, only the thing that voucher-mail-templates are unavailable (for other mail templates context I can freely generate mails).

I cannot new create mail template (of any context) without providing language. The multilingual checkbox is ticked automatically when the context = voucher, and it cannot be unticked. The tooltip suggests that checkbox can be (un)checked by user, but is it impossible at all. When the context != Voucher, the checkbox cannot be ticked. It makes this "multilingual" checkbox unnecessary. So maybe there is a cause of not printing vouchers?

Also, I have a question - if I installed locale correctly, please see below: I installed locale on machine like below:

sudo locale-gen fr_FR
sudo locale-gen fr_FR.UTF-8
sudo locale-gen es_ES
sudo locale-gen es_ES.UTF-8
sudo update-locale
sudo service smasch stop
sudo service smasch start

after that I checked with locale -a:

C
C.UTF-8
en_US.utf8
es_ES
es_ES.iso88591
es_ES.utf8
french
fr_FR
fr_FR.iso88591
fr_FR.utf8
POSIX
spanish

In the browser I see languages French and Spanish (not like before fr_FR). I guess it is ok? But then I exit the ssh session, and login in ssh again. Command locale -a returns (no French, Spanish), which are still displayed in the browser.

C
C.UTF-8
en_US.utf8
POSIX