facebook auto like, Open console with F12 and Paste the code.

fb-auto-like.js

var arr= Array.prototype.slice.call(document.querySelectorAll('.UFILikeLink'));
var index = 0;
setInterval(function(){
	var a = arr.shift();
	if(a.className.indexOf("UFILinkBright") < 0){
		console.log("like : ",++index);
		a.click();	
	}
	if(arr.length == 0){
		document.querySelectorAll('a.UFIPagerLink')[0].click();
		console.log("finish a pack, loading another pack");
		arr= Array.prototype.slice.call(document.querySelectorAll('a.UFILikeLink'));	
	}
	
},1000);

What is className modified for?

6JViSMeQ5HGU.js?_nc_x=lphY6DB8pg1&_nc_eui2=AeHHOuhB7kHSLi9wwINzlVj0mUtcAAodlB6ZS1wACh2UHro3Uba52s2z8C4Bfrqq9kyCj8FqxrgX8X3jTG7eRFXQ:58 ErrorUtils caught an error:

Cannot read properties of undefined (reading 'className')

Subsequent non-fatal errors won't be logged; see https://fburl.com/debugjs.