問題一：
"Plugin caching_sha2_password could not be loaded: 找不到指定的模塊。 Library path is 'caching_sha2_password.dll' QMYSQL: Unable to connect"
解決方法：
alter user 'root'@'localhost' identified with mysql_native_password by 'root';
問題二：
ERROR 1524 (HY000): Plugin ‘mysql_native_password‘ is not loaded
解決方法：
修改my.ini文件
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