title: I want to fetch the data in data.json using this query or code
body: <p>I am using VS code + git bash to scrape this data into JSON. But I am not getting any data into JSON or I did not get anything in JSON. JSON file is empty.</p>
  
  <pre><code>import scrapy
  
  class ContactsSpider(scrapy.Spider):
      name= 'contacts'
  
      start_urls = [
          'https://app.cartinsight.io/sellers/all/amazon/'
      ]
  
      def parse(self, response):
          for contacts in response.xpath("//td[@title= 'Show Contact']"):
              yield{
                  'show_contacts_td': contacts.xpath(".//td[@id='show_contacts_td']").extract_first()
                  }
              next_page= response.xpath("//li[@class = 'stores-desc hidden-xs']").extract_first()
              if next_page is not None:
                  next_page_link= response.urljoin(next_page)
                  yield scrapy.Request(url=next_page_link, callback=self.parse)
  </code></pre>