启动mariadb时出错

Question

我已经按照官方说明安装了MariaDB：
Installing MariaDB Server on macOS Using Homebrew - MariaDB Knowledge Base

但是，当我打算启动它时，它已成功安装

$ mysql.server start
Starting MariaDB
.180704 17:40:15 mysqld_safe Logging to '/usr/local/var/mysql/me.local.err'.
180704 17:40:15 mysqld_safe Starting mysqld daemon with databases from /usr/local/var/mysql
. ERROR! 

Google搜索没有帮助，并且无法通过重新安装mariadb解决。