這個問題通常在laravel中表現為類似下邊的異常：
local.ERROR: SQLSTATE[HY000] [2006] MySQL server has gone away {"exception":"[object] (PDOException(code: 2006): SQLSTATE[HY000] [2006] MySQL server has gone away at...
找到你的my.cnf,在[mysqld]下增加一行
1 default-authentication-plugin=mysql_native_password