问题描述：

[PDOException]

SQLSTATE[HY000] [2054] The server requested authentication method unknown to the client

[PDOException]

PDO::__construct(): The server requested authentication method unknown to the client [caching_sha2_password]

解决方法：

alter user 'root'@'%' identified with mysql_native_password by '123456';

flush privileges;

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原文链接：https://blog.csdn.net/Balmunc/article/details/124162939