So, again I come here to ask you for help.

I'm using Apus RealState Template with WooCommerce.
Everything was fine til I installed a payment gateway module...

Now, Wordpress logs the following to the console with every page I try to load:

>Uncaught TypeError: Cannot read property 'includes' of undefined<br/>
>>    at HTMLDocument.<anonymous> (erede.js:6)<br/>
>>   at i (jquery.js?ver=1.12.4:2)<br/>
>>    at Object.fireWith [as resolveWith] (jquery.js?ver=1.12.4:2)<br/>
>>    at Function.ready (jquery.js?ver=1.12.4:2)<br/>
>>    at HTMLDocument.K (jquery.js?ver=1.12.4:2)

> (anonymous) @ erede.js:6<br/>
> i @ jquery.js?ver=1.12.4:2<br/>
> fireWith @ jquery.js?ver=1.12.4:2<br/>
> ready @ jquery.js?ver=1.12.4:2<br/>
> K @ jquery.js?ver=1.12.4:2<br/>

This is the context mentioned from erede.js:

    (function( $ ) {
	'use strict';

	$( function() {

		var checkIfInputHasDefaultBehavior = $("#checkInputClass").css("background-image").includes("url");
		
		if(!checkIfInputHasDefaultBehavior)
		{	
			return;
		}

but when I change the template, this error stops happening... does anyone know what might be going on?