Hidden camera or production error or sensor in screen?

I recently bought a chuwi hi10x. Great tablet!
But now i noticed there is something in my screen and you cannot wash it off…
Looks like a camera??? Left corner side down the screen???
What is this? A production error or did someone install a spy cam?
Could you help me out pl?
Sincerely ,

Have you removed second protective film? (there are 2 protective films on the tablet). Probably something under the film.

Was not aware it had one, sorry! And thanks alot!