Error in the module, how to understand the reason?

Question

JavaScript

Good evening.
There was an incomprehensible situation in the work of the store on "PrestaShop v. 1.6.1.24".
The situation is the following.
There is a module "Prom.ua Connect", which allows you to import / export goods to the site prom.ua.
There are three laptops in the office, on one Windows 10, on the other two Windows 7, on all the latest version of the Google Chrome browser.
When you click on the "Edit" button,

a pop-up window with a list of product categories should open .

But this only works on one of the three office computers, on the other two, nothing is displayed in the pop-up window. Errors in the browser console:




Tested on home computers. On one, in two systems, in all major browsers - it works. There are, of course, errors in the console, but they do not affect the operation of the module.




On the second home, Windows 7, Google Chrome latest version - does not work.

We checked it from mobile phones, it works on some, it doesn’t work on some, it doesn’t matter whether through a mobile operator or through office wi-fi.

How to understand such strange behavior of the module? Why does the website work on some devices and not on others?
How do you even understand what's going on?

Answer 1

on the screenshot with errors, the reason is visible: there is a request http://xxxxx/modules/promua/ajax.phpvia insecure HTTP, although the page is loaded via HTTPS.
Option 1: try to open your source site not on httpS, but on the old leaky http.
Option 2: figure out where this ajax request comes from and why using a non-secure protocol.

Answer 2

Judging by the screenshots, you have an error related to CORS. The fact that this can be found here https://webdevblog.ru/chto-takoe-cors/
You can try to run chrome with protection disabled, not a very good thing, but. should work. https://stackoverflow.com/questions/3102819/disable...