Kaspersky Web Traffic Security requires the en_US.UTF-8 locale to be installed in the operating system. If this locale is not installed in the system, you install it.
To check whether the en_US.UTF-8 locale is available:
locale -a
If the locale is already installed, no further action is required.
To install the en_US.UTF-8 locale:
yum install glibc-langpack-en
apt install locales
dpkg-reconfigure locales
apt-get install glibc-locales
The locale is added to the operating system.
locale -a