[Koha] (no subject)

[Haik Zargaryan]

Dear friends,
We have installed the latest version of koha 3.8 and added packs for Armenian language. For the staff interface everything works well, but when we activate language for the OPAC, a strange error occurs. Below you can see the error text.
------------------------------
Software error: Template process failed: file error - parse error - doc-head-close.inc line 3:
unexpected token (Տարբերակ) [% Տարբերակ %] at /usr/share/koha/lib/C4/Templates.pm line 127.
----------
Any ideas?
Thanks in advance,
Haik.