The Fan on the side noozle is loose after working at the toolhead

Following a filament jam, the extruder was dismantled and reassembled. Once the covers had been screwed back on, the right-hand fan was sitting loosely on the base of the toolhead camera. I’ve checked every possible position, but can’t find where or how the fan was originally secured.
Does anyone perhaps have the opportunity to have a look at that? I would be very grateful for a description or a photo.

Unfortunately, the Bambulab manual makes no mention of the fan.

Picture or a video? Those would be helpful so we can see better what you mean

Der Lüfter ist nicht mehr fest und ich finde keine Stelle, wo die sein sollte.