debian 9 doesn't display correct icon but \u2705 caracter

[almoondsllc]

I think some fonts is missing but which one in debian?
when I send
echo 'text to be displayed' | telegram-notify --success --text -
I got this
\u2705 text to be displayed
on Telegram

[atxulo]

Here's how i've made it work:

Run the command: locale. It'll show something like this:

LANG=C
LC_CTYPE="C"
...

Then, change the locale to UTF-8 and reboot (choose your language):

sudo update-locale LANG=en_US.UTF-8 LANGUAGE=en.UTF-8
sudo reboot

And now it should work. You can run locale again to see the changes

[NicolasBernaerts]

Thanks for the tip.
I'll add it in the article.
Cheers