Trouble scraping Web Whatsapp

Hi,

I am trying to extract the first conversation chat messages from web Whatsapp. But it can't get any messages. I'm totally new to web scraping, I would like to ask if anyone had done it before or point me in the right direction, thanks.

Url: https://web.whatsapp.com/

Sitemap:
{"_id":"whatsapp","startUrl":["https://web.whatsapp.com/"],"selectors":[{"id":"first chat","type":"SelectorElementClick","parentSelectors":["_root"],"selector":"._13opk div._2kHpK","multiple":false,"delay":0,"clickElementSelector":"._13opk div._2kHpK","clickType":"clickOnce","discardInitialElements":"do-not-discard","clickElementUniquenessType":"uniqueText"},{"id":"msg","type":"SelectorText","parentSelectors":["_root"],"selector":"div.z_tTQ","multiple":true,"regex":"","delay":0}]}