Sm amount of space used up by video and photo, but i have no videos or photos

[nuf sed]

When I check my storage in setting it says I have a small amount of space (30mb) used up by videos/photos but when I checked to see what they are I find my gallery is completely empty.

So what is taking up the 30mb .

I backed up my vids/pics on Google drive and photos app and cleared the gallery weeks ago, so what is using this space?

Thankyou