Problem scraping javascript site – help needed

Problem

I am trying to scrape the page https://tienda.mercadona.es/categories/112 and I have installed the docker and followed all the required steps given in the post. Splash works well, but the spyder does not and I don’t know why. The IP of the splash_url is correct but I can’t see in the response object when I write scrapy shell “webpage” the complete page, ie, the page has not rendered correctly.

Process

I have followed the steps for installing and start with the docker in this link: https://splash.readthedocs.io/en/latest/install.html
My code is very simple. I create in pyCharm a project and I have only changed two files: settings.py and the spider.py.

settings.py:

BOT_NAME = 'MercadonaINE'
SPIDER_MODULES = ['MercadonaINE.spiders']
NEWSPIDER_MODULE = 'MercadonaINE.spiders'
USER_AGENT = 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)'
ROBOTSTXT_OBEY = False

DOWNLOADER_MIDDLEWARES = {
    'scrapy_splash.SplashCookiesMiddleware': 723,
    'scrapy_splash.SplashMiddleware': 725,
    'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware': 810,
}
SPLASH_URL = 'http://192.168.1.37:8050/'
SPIDER_MIDDLEWARES = {
    'scrapy_splash.SplashDeduplicateArgsMiddleware': 100,
}
DUPEFILTER_CLASS = 'scrapy_splash.SplashAwareDupeFilter'
HTTPCACHE_STORAGE = 'scrapy_splash.SplashAwareFSCacheStorage'

spyder.py:

import scrapy
from ..items import MercadonaineItem
#from scrapy.utils.response import open_in_browser
from scrapy_splash import SplashRequest

class MercadonaSpider(scrapy.Spider):
    name = 'mercadona'
    start_urls = [
        'https://tienda.mercadona.es/categories/112'
    ]

    def start_requests(self):
        for url in self.start_urls:
            yield SplashRequest(url, self.parse, endpoint='render.html', args={'wait': 3},)

    def parse(self, response):
        #open_in_browser(response)
        title = response.css('title::text').extract()
        yield {'title': title}

In a browser  I check with 192.168.1.37:8050. I see that the code loads the page https://tienda.mercadona.es/categories/112 with the initial form and the products and I can see the html code of all the components. The page loads the content dynamically with javascript. (see the following screen captures).

The problem is when I run the spider. The response object does not contain the complete html elements (see a screen capture below). In the html code there are not the first form of the page and there are not any product with the prices.