The mbstring extension is missing. Please check your PHP configuration.

平台：阿里云

系统：Ubuntu 18.04.2 LTS (GNU/Linux 4.15.0-52-generic x86_64)

问题：安装phpmyadmin后，打开http://ip/phpmyadmin报错：The mbstring extension is missing. Please check your PHP configuration.

解决办法：

sudo apt-get install libapache2-mod-php7.*
sudo apt-get install php7.*-mbstring
sudo service apache2 restart