All images dissapeared except for thumbnail

Hi,

I can insert a picture in a post, but when I view in in preview or when it’s published the image just is … ‘invisible’ :S
You can see a white field and you can click it to open the image.
Example: https://www.gaming4u.be/pikmin-3-review/
My image path is wp-content/uploads, so that can’t be the problem.
Please help, I have been looking for an answer since yesterday.
Many thanks in advance!

Greets,
Thibault