Getting this error when scraping JSON with scrapy: Spider must return request, item, or None, got 'str'

I am trying to get a json field with key "longName" with scrapy but I am receiving the error: "Spider must return request, item, or None, got ‘str’".

The JSON I’m trying to scrape looks something like this:

{
   "id":5355,
   "code":9594,
   "longName":"Coolio Note, Series 1164"
}

This is my code:

import scrapy
import json

class NotesSpider(scrapy.Spider):
    name = 'notes'
    allowed_domains = ['blahblahblah.com']
    start_urls = ['https://blahblahblah.com/api/123']

    def parse(self, response):
        data = json.loads(response.body)
        yield from data['longName']

I get the above error when I run "scrapy crawl notes" in prompt. Anyone can point me in the right direction?

>Solution :

If you only want longName modifying your parse method like this should do the trick:

    def parse(self, response):
        data = json.loads(response.body)
        yield {"longName": data["longName"]}