We are getting :

Uncaught TypeError: Illegal invocation for window open

It's pretty simple and it should work correctly. when we do console it shows this

var t = i(); 
// console.log(t);    output is https://web.whatsapp.com/send?phone=6666666666

(t += "&text=" + encodeURIComponent(a)),
    window.open(t, "_blank").focus(),
    I();
}

Any help will be great.

I am getting this error in

window.open(twapp, "_blank").focus(),

Here is the live site

When you click on the chat in right bottom and tried to send msg this appears in console.