我是一个完全noob使用scrapy的第一次。我已经设置了它，以获得一些信息，但它总是停止后，5页。我希望它刮了很多更多的网页，因为至少有20可用。

import scrapy
from myproject.items import EbaySold

class EbaySpider(scrapy.Spider):
    name = 'EbaySold'
    allowed_domains = ['www.ebay.com']
    start_urls = ['https://www.ebay.com/b/Apple-Unlocked-Smartphones/9355/bn_599372?LH_Sold=1&mag=1&rt=nc&_dmd=1&_pgn=1&_sop=13']

    def parse(self, response):
        products = response.css('li.s-item')

        product_item = EbaySold()
        for product in products:
            product_item['name'] = product.css('h3.s-item__title::text').get()
            if product_item['name'] is None:
                product_item['name'] = product.css('span.BOLD::text').get()
            product_item['sold_price'] = product.css('span.POSITIVE::text').get()
            product_item['date_sold'] = product.css('div.s-item__title-tag::text').get().replace('SOLD ', '')
            yield product_item

        next_page = response.css('a[type=next]').attrib['href']

        if next_page is not None:
            yield response.follow(next_page, callback=self.parse)