问题：

Client does not support authentication protocol requested by server; consider upgrading MySQL client, error code: 1251, SQLState: 08004

原因：

客户端不支持服务器（8.0默认）caching_sha2_password 方式的链接认证，强制使用：mysql_native_password 就可以解决。

修复：

-- Change authentication plugin for a user
ALTER USER 'your_username'@'localhost' IDENTIFIED WITH mysql_native_password BY 'your_password';

-- Apply changes
FLUSH PRIVILEGES;