无法通过存储库中的标识变量选择实体

我有以下查询。查询在我的InstagramShopPicture中

$queryBuilder = $this->createQueryBuilder('p')
                    ->select('p.id, p.caption, p.price, p.lowresimageurl, p.medresimageurl, p.highresimageurl, p.numberoflikes, p.numberofdislikes, shop.id, shop.username, shop.fullname, contact, category')
                    ->leftJoin('p.shop', 'shop')
                    ->leftJoin('shop.contact', 'contact')
                    ->leftJoin('p.category', 'category')
                    ->leftJoin('category.pictureTopCategory', 'pictureTopCategory')
                    ->leftJoin('category.pictureFirstLevelCategory', 'pictureFirstLevelCategory')
                    ->leftJoin('category.pictureSecondLevelCategory', 'pictureSecondLevelCategory')
                    ->where('p.isLocked = false')
                    ->andWhere('p.isStyleInspiration = false')
                    ->andWhere('shop.isLocked = false');

但是，我收到以下错误：

QueryException: [Semantical Error] line 0, col -1 near 'SELECT p.id,': Error: Cannot select entity through identification variables without choosing at least one root entity alias

关于如何解决这个问题的任何想法？