So, can you spot what's wrong in this photo?
I'll give you a hint: there's two problems. Not only is the fan catching on the element (in fact, the edge of the fan blade is jammed right up against it)...
...but the element is no longer quite circular, and where it's become kinked the outer casing has split:
Time to get in touch with the landlord and get it sorted, otherwise it'll only blow the element halfway through cooking something or other. That'll be the second oven repair/replacement - the last one was a bit over four years ago.