The Strange Case of the Missing Images

Hi,

I will keep this as short as possible. I accesed my website today to see if everything is as it should be. Unfortunately, it was not. None of the articles had the in-article images anymore and I simply do not know why. So, the Featured Image still appears everytime I look at the list of articles. But, when I acces the articles, nothing. Only the title of the photo appears. I tried to see if this is a problem only on desktop or only on mobile, but it seems it is the same on both.

What could be the problem?