问无法在Laravel迁移

EN

return new class extends Migration {
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('metrics', function (Blueprint $table) {
            $table->id();

    });
}

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::create('metrics', function(Blueprint $table)
        {
          $table->dropIndex(['id']);
        });
    }
};

  SQLSTATE[42S01]: Base table or view already exists: 1050 Table 'metrics' already exists (SQL: create table `metrics` (`id` bigint unsigned not null auto_increment primary key, `value_string` varchar(255) null, `value_integer` int null, `value_float` double(8, 2) null, `value_date` date null, `value_boolean` tinyint(1) null, `category` varchar(255) not null, `source` varchar(255) not null, `availability` tinyint(1) not null) default character set utf8mb4 collate 'utf8mb4_unicode_ci')

  at vendor/laravel/framework/src/Illuminate/Database/Connection.php:742
    738▕         // If an exception occurs when attempting to run a query, we'll format the error
    739▕         // message to include the bindings with SQL, which will make this exception a
    740▕         // lot more helpful to the developer instead of just the database's errors.
    741▕         catch (Exception $e) {
  ➜ 742▕             throw new QueryException(
    743▕                 $query, $this->prepareBindings($bindings), $e
    744▕             );
    745▕         }
    746▕     }