我有一个简单明了的Scrapy蜘蛛来爬行https://books.toscrape.com/。
还没有实现解析功能，我想看看蜘蛛是否能爬取网站。

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

class MySpider(CrawlSpider):
    name = 'myspider' 
    allowed_domains = ["tosrape.com"]
    start_urls = ["https://books.toscrape.com/"]
    
    rules = (
        Rule(LinkExtractor(allow="catalogue/category")),
    )

即使我能够通过Scrapy shell（例如response.css("a::text").getall()）与网站交互，但爬虫不会抓取网站并返回：

2023-03-02 14:31:05 [scrapy.core.engine] INFO: Spider opened
2023-03-02 14:31:05 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2023-03-02 14:31:05 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2023-03-02 14:31:06 [scrapy.core.engine] DEBUG: Crawled (404) <GET https://books.toscrape.com/robots.txt> (referer: None)
2023-03-02 14:31:06 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://books.toscrape.com/> (referer: None)
2023-03-02 14:31:07 [scrapy.spidermiddlewares.offsite] DEBUG: Filtered offsite request to 'books.toscrape.com': <GET https://books.toscrape.com/catalogue/category/books_1/index.html>
2023-03-02 14:31:07 [scrapy.core.engine] INFO: Closing spider (finished)
...
 'downloader/response_status_count/200': 1,
 'downloader/response_status_count/404': 1,
 ...
2023-03-02 14:31:07 [scrapy.core.engine] INFO: Spider closed (finished)

我哪里做错了？