Thumbnail Error

The following error(s) occurred:

• You cannot receive images from this site. For security reasons, first you need to add this site to the $ALLOWED_SITES list.

Query String: src=https%3A%2F%2Fwww.ioleggoperche.it%2Fioleggoperche.jpg&w=400&h=200&zc=1
TimThumb version: 2.8.16
Instruction: RAXO thumbnails don't work — what to do? (registration required)