Scrapy结合Splash无法加载动态内容求助

我正在使用Scrapy搭配Splash加载页面中的动态渲染内容，但未达到预期效果，以下是我的配置与代码：

settings.py 配置 #

SPIDER_MIDDLEWARES = {
    'scrapy_splash.SplashDeduplicateArgsMiddleware': 100,
}
DOWNLOADER_MIDDLEWARES = {
    'scrapy_splash.SplashCookiesMiddleware': 723,
    'scrapy_splash.SplashMiddleware': 725,
}
SPLASH_URL="http://localhost:8050"
DUPEFILTER_CLASS = 'scrapy_splash.SplashAwareDupeFilter'
HTTPCACHE_STORAGE = 'scrapy_splash.SplashAwareFSCacheStorage'
SPLASH_COOKIES_DEBUG = False

爬虫核心代码 #

def start_requests(self):
        urls = [
            "https://callmeduy.com/san-pham/"
        ]
        for url in urls:
            yield SplashRequest(url=url, 
                                # endpoint='render.html', 
                                callback=self.parse, 
                                args={
                                    'wait': 5
                                })

def parse(self, response):
        print(response.xpath("//body").get())
        f = open('res.html', 'w+')
        f.write(response.xpath("//body").get())
        f.close()

当前问题 #

目前页面的动态内容仍未加载，响应内容如下：

恳请各位技术人士帮忙解决。

内容的提问来源于stack exchange，提问作者mhtuan