authentication plugin "caching_sha2password" cannot be loaded: 乱码

在使用Navicat Premium 12连接MySQL数据库时会出现Authentication plugin 'caching_sha2_password' cannot be loaded的错误，解决方法如下

---

修改账户密码加密规则并更新用户密码

   ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;   #修改加密规则


   ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';   #更新一下用户的密码


　　 FLUSH PRIVILEGES;   #刷新权限

     alter user 'root'@'localhost' identified by '111111';

现在再次打开Navicat Premium 12连接MySQL问题数据库就会发现可以连接成功了