我正在尝试从事这个项目。 https://github.com/thiagogomesverissimo/symfony_traditional_login 按照说明进行操作。但是当我执行

php bin/console doctrine:migrations:migrate

然后我得到以下错误：

In AbstractMySQLDriver.php line 112:

An exception occurred in driver: SQLSTATE[HY000] [1045] access 
denied for user 'master'@'localhost' (using password: YES)                               

In PDOConnection.php line 50:

SQLSTATE[HY000] [1045] access denied for user 
'master'@'localhost'(using 
password: YES)                                                                

In PDOConnection.php line 46:

SQLSTATE[HY000] [1045] access denied for user 'master'@'localhost' 
(using password: YES)

我确实尝试编辑env文件中的mysql网址，如下所示：

https://github.com/thiagogomesverissimo/symfony_traditional_login/blob/master/.env.dist

DATABASE_URL=mysql://db_username:db_password@127.0.0.1:3306/db_mydbname

另一种尝试是：

DATABASE_URL=mysql://root:root@localhost/mydbname

我只是用我的信息替换用户名，密码和mydbname。但是仍然出现相同的错误。任何帮助将不胜感激。