Glowing flying saucer over Granada, Spain

On April 14, 2018, a witness has caught a strange picture of a glowing flying saucer over Granada, in Spain.

Witness statement:

Looking at a photo I took earlier today there appears to be a perfect white disk in the sky. It may be a cloud but there are no other clouds nearby and it is perfectly disk shaped which I find rather strange.

Source, 14th April 2018