Scrapy CrawlSpider OpenSSL .SSL.Error: [('SSL routines', '', 'unexpected eof while reading')]>]

Question

问题遇到的现象和发生背景

当我使用scrapy CrawlSpider模板爬取网页时，报了如下错误。

2022-05-22 18:12:45 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <GET http://xxx/xxx/xxxx> (failed 1 times): [<twisted.python.failure.Failure OpenSSL.S
SL.Error: [('SSL routines', '', 'unexpected eof while reading')]>]

问题相关代码，请勿粘贴截图

我的spider代码

class ReadSpider(CrawlSpider):
    name = 'read'
    allowed_domains = ['xxxxx']
    start_urls = ['xxxxx']

    rules = (
        Rule(LinkExtractor(allow=r'/book/[\d]+_[\d]+.html'), callback='parse_item', follow=True),
        Rule(LinkExtractor(restrict_xpaths='//div[@id="tab1"]/div[@class="class-nav"]/a'), callback='parse_item',
             follow=True),
    )
    # follow=True根据执行完解析类后的response继续提取

    def parse_item(self, response):
        # item['domain_id'] = response.xpath('//input[@id="sid"]/@value').get()
        # item['name'] = response.xpath('//div[@id="name"]').get()
        # item['description'] = response.xpath('//div[@id="description"]').get()
        books = response.xpath('//div[@class="bookslist"]/ul/li/div')
        for book in books:
            item = DushuItem()
            name = book.xpath('./h3/a/text()').get()
            p = book.xpath('./p')
            author = p[0].xpath('./text()').get()
            info = p[1].xpath('./text()').get()
            imgUrl = book.xpath('./div/a/img/@src').get()  
            infoUrl = 'htttp://xxxxxx.com' + book.xpath('./h3/a/@href').get() 
            item['name'] = '《' + name + '》'
            item['author'] = author
            item['imgUrl'] = imgUrl
            item['info'] = info
            # return scrapy.Request(url=infoUrl, callback=self.parseDetail, meta={'item': item})
            # yield item
            print('------------',infoUrl[0:len(infoUrl)-1])
            # print(infoUrl[1:])
            yield scrapy.Request(url=infoUrl[0:len(infoUrl)-1], callback=self.parseDetail, meta={'item': item})

    def parseDetail(self, response):
        item = response.meta['item']
        infoS = response.xpath('//div[@class="text txtsummary"]/text()').get()
        # info = re.findall(r'\u3000\u3000(.*)', infoS)
        # info = re.sub(r'"', r'\"', infoS)
        # if info:
        #     item['info'] = info[0]
        # else:
        #     item['info'] = infoS
        item['info'] = infoS
        yield item

我的解答思路和尝试过的方法

把yield scrapy.Request(url=infoUrl[0:len(infoUrl)-1], callback=self.parseDetail, meta={'item': item})换成yield item可以正常爬取，这是为什么呢？