老师好,我下完mcshop的代码后,根据视频教程,在执行
php artisan db:seed时,出现以下错误

at vendor/laravel/framework/src/Illuminate/Database/Connection.php:671
    667▕         // If an exception occurs when attempting to run a query, we'll format the error
    668▕         // message to include the bindings with SQL, which will make this exception a
    669▕         // lot more helpful to the developer instead of just the database's errors.
    670▕         catch (Exception $e) {
  ➜ 671▕             throw new QueryException(
    672▕                 $query, $this->prepareBindings($bindings), $e
    673▕             );
    674▕         }
    675▕

      +16 vendor frames
  17  database/seeders/DatabaseSeeder.php:17
      Illuminate\Support\Facades\Facade::__callStatic("unprepared")

      +22 vendor frames
  40  artisan:37
      Illuminate\Foundation\Console\Kernel::handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))

试着更改DB密码,用户名,
都不能解决问题.
这是什么问题呢?