Hey I was washing my car in preparation to try out McGuires 3 stage. After washing I opened up the boot and noticed that the corner was soaking, I checked around the light enclosure but couldn’t find anything, after peeling back the carpet I found where the leak was (photo).

It looks as though it is coming from this cover. I don’t know what it is for or where the water is getting to it from?
Does anybody know if this is common? And/or the best way to fix it?
Any help would be great, hopefully before it rains!!

It looks as though it is coming from this cover. I don’t know what it is for or where the water is getting to it from?
Does anybody know if this is common? And/or the best way to fix it?
Any help would be great, hopefully before it rains!!