我得到了一个按摩喜欢ERROR：蜘蛛错误处理和第276行，在aiter_errback产量等待它。anext（）在我的终端，我的代码下面给出谁能告诉我哪里是问题。

import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule

class CandywareCrawlspiderSpider(CrawlSpider):
    name = "candyware_crawlspider"
    allowed_domains = ["www.candywarehouse.com"]
    # start_urls = ["https://www.candywarehouse.com/collections/wedding?page=24"]

    user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36'

    # Editing the user-agent in the request sent
    def start_requests(self):
        yield scrapy.Request(url='https://www.candywarehouse.com/collections/wedding?page=24', headers={
            'user-agent': self.user_agent
        })

    # Setting rules for the crawler
    rules = (
        Rule(LinkExtractor(restrict_xpaths=('//ul[@class="pagination-custom"]//li/a[@title="Next »"]')), callback='parse_item', follow=True, process_request='set_user_agent'),)
    #
    # # Setting the user-agent
    def set_user_agent(self, request, spider):
        request.headers['User-Agent'] = self.user_agent
        return request

    def parse_item(self, response):

        product_list = response.xpath('//div[@class="js-grid"]/div')

        for product in product_list:
            product_name = product.xpath('.//p[@class="product__grid__title"]/text()').get().strip()
            price = product.xpath('.//span[@class="price"]/text()').get().strip()
            review_counts = product.xpath('.//span[@class="tt-product-block__rating"]/text()').get().replace('\n', '').replace('   ', '')

            yield {
                'product_name': product_name,
                'price': price,
                'review_counts': review_counts,
                'User-Agent': response.request.headers['User-Agent'],
            }