I want to mention that the web application is working and is live and everything is working. But I have some job-colleagues from other country and when they try to click on that button (after clicking the button, a xls file should be downloaded), the page just goes white. I connected to their PCs remotely and tried to clear cache/cookies/histories, use other browsers but the problem was still there (after clicking the button, the page just goes white). I used Chrome DevTools and there was no error, all the requests had the status code : 200.
Can someone give me an ideea of how to find the problem ?