Sending what's up messages over selenium

I am trying to send an automated What's up picture messages using Selenium. I send messages over what's up web everything is going as expected until the Send button it shows the following error: Message: no such element: Unable to locate element: {"method":"xpath","selector":"/html/body/div[1]/div/div/div[2]/div[2]/span/div/span/div/div/div[2]/span/div/div/span"}(Session info: chrome=84.0.4147.89)

the selector I use to find the button is: '/html/body/div[1]/div/div/div[2]/div[2]/span/div/span/div/div/div[2]/span/div/div/span' The Photo of the button

Also I tried CSS selector as well but it did not work