php 版本：7.4.8 操作系统：ubuntu
当我尝试 localhost/phpmyadmin 时出现此错误
缺少 mbstring 扩展名。请检查您的 PHP 配置。
我已经安装了 mbstring
sudo apt-get install php-mbstring
Reading package lists... Done
Building dependency tree
Reading state information... Done
php-mbstring is already the newest version (2:7.4+76+ubuntu18.04.1+deb.sury.org+9).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
sudo apt-get install php7.4-mbstring
Reading package lists... Done
Building dependency tree
Reading state information... Done
php-mbstring is already the newest version (2:7.4+76+ubuntu18.04.1+deb.sury.org+9).
0 upgraded, 0 newly installed, 0 to remove and 0 not …