After I installed phpmyadmin, and run it with localhost/phpmyadmin I get error:
phpMyAdmin - Error The mbstring extension is missing. Please check your PHP configuration
When I check php -m console displays that mbstring is already installed. PHP version: 7.2.4 Installed phpmyadmin via apt-get install phpmyadmin
In directory /etc/php I got 3 subfolders - 7.1, 7.2, 7.3
You need to install w.r.t your PHP version.
sudo apt-get install php7.1-mbstring
Or you may specific php version in command
Had the same problem and worked for me after checking PHP version
php -v
which gave me :
PHP 7.2.13-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Dec 7 2018 08:07:36) ( NTS )
so I did
sudo apt-get install php7.2-mbstring
Thanks