Php 请求了未知的数据库类型oid

我对symfony很陌生（第一天阅读）。我正在尝试从一个类创建一个表。我用命令成功地创建了这个类

php-bin/console-make:entity

下面是课堂：

<?php
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
 * @ORM\Entity(repositoryClass="App\Repository\DbUserRepository")
 */
class DbUser
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string", length=100)
     */
    private $username;

    /**
     * @ORM\Column(type="string", length=50, nullable=true)
     */
    private $role;

    /**
     * @ORM\Column(type="string", length=100)
     */
    private $password;

    /**
     * @ORM\Column(type="string", length=150, nullable=true)
     */
    private $names;

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getUsername(): ?string
    {
        return $this->username;
    }

    public function setUsername(string $username): self
    {
        $this->username = $username;

        return $this;
    }

    public function getRole(): ?string
    {
        return $this->role;
    }

    public function setRole(?string $role): self
    {
        $this->role = $role;

        return $this;
    }

    public function getPassword(): ?string
    {
        return $this->password;
    }

    public function setPassword(string $password): self
    {
        $this->password = $password;

        return $this;
    }

    public function getNames(): ?string
    {
        return $this->names;
    }

    public function setNames(?string $names): self
    {
        $this->names = $names;

        return $this;
    }
}

---

你创建数据库了吗<代码>bin/控制台原则：数据库：创建

是！数据库存在