Set all locale values at once from console.
sudo update-locale LANG=en_US.UTF-8
sudo update-locale LANGUAGE=en_US.UTF-8
sudo update-locale LC_CTYPE=en_US.UTF-8
sudo update-locale LC_NUMERIC=en_US.UTF-8
sudo update-locale LC_TIME=en_US.UTF-8
sudo update-locale LC_COLLATE=en_US.UTF-8
sudo update-locale LC_MONETARY=en_US.UTF-8
sudo update-locale LC_MESSAGES=en_US.UTF-8
sudo update-locale LC_PAPER=en_US.UTF-8
sudo update-locale LC_NAME=en_US.UTF-8
sudo update-locale LC_ADDRESS=en_US.UTF-8
sudo update-locale LC_TELEPHONE=en_US.UTF-8
sudo update-locale LC_MEASUREMENT=en_US.UTF-8
sudo update-locale LC_IDENTIFICATION=en_US.UTF-8
sudo update-locale LC_ALL=en_US.UTF-8Related
When getting a mongo dump you may encounter following error:
terminate called after throwing an instance of 'std::runtime_error'
what(): locale::facet::_S_create_c_locale name not valid
This error may be related to your locale settings and reseting all your locale may solve it.