Symfony3.4 / Doctrine迁移 - 驱动程序中发生异常：SQLSTATE [HY000] [2002]没有这样的文件或目录

Question

我正在尝试在Symfony3.4项目中运行Doctrine迁移，但是我现在已经停留了几天。有人遇到过同样的问题吗？如何使这项工作？提前致谢！

php bin/console doctrine:migrations:migrate Version20180909015642

19:03:19 ERROR     [console] Error thrown while running command 
"doctrine:migrations:migrate". Message: "An exception occured in 
driver: SQLSTATE[HY000] [2002] No such file or directory" ["exception" 
=> DoctrineDBALExceptionConnectionException { …},"command" => 
"doctrine:migrations:migrate","message" => "An exception occured in 
driver: SQLSTATE[HY000] [2002] No such file or directory"] []

In AbstractmysqlDriver.php line 103:

  An exception occured in driver: SQLSTATE[HY000] [2002] No such file 
or directory  

In PDOConnection.php line 47:

  SQLSTATE[HY000] [2002] No such file or directory  

In PDOConnection.php line 43:

  SQLSTATE[HY000] [2002] No such file or directory

Bundle在AppKernel.php中注册

new DoctrineBundleMigrationsBundleDoctrineMigrationsBundle(),

在config.yml中

doctrine_migrations:
    dir_name: "%kernel.root_dir%/DoctrineMigrations"
    namespace: ApplicationMigrations
    table_name: doctrine_migration_versions
    name: Application_Migrations_Default

应用程序/ DoctrineMigrations / Version20180909015642.php

<?php
declare(strict_types=1);

namespace ApplicationMigrations;

use DoctrineDBALMigrationsAbstractMigration;
use DoctrineDBALSchemaSchema;

/**
 * Auto-generated Migration: Please modify to your needs!
 */
class Version20180909015642 extends AbstractMigration
{


    /**
     * @param Schema $schema
     */
    public function up(Schema $schema)
    {
        //...
    }

    /**
     * @param Schema $schema
     */
    public function down(Schema $schema)
    {
        //...
    }
}