@JJRambo the point is that only the creator knows what is in his creation.
This concerns all kind of things, not only a retropie-image.
So i have no idea who you could ask to get a really good answer.
You could ask people somewhere else what they are guessing.....but in usual it does not help.

@mitu

Just deleting the ps3 drivers was enough to stop the notice and let me exit the menu without disconnecting the dualshock4. Thanks so much!

@saltyy Well i think its no use to try to fix a error that i dont understand, it appers every time even if i reinstall it, and tbh, there a a lot of errors on the pi ^^

and... the error is about a ps3 controller, mine is a ps4 so its kinda wrong ^^

@dudleydes Thanks I will check it out, my analog sticks were automatically configured too but I wanted to map the left analog to move and the right analog to aim/look. Maybe fiddling with the .cfg file could tell me more!

@mitu Ah. Right.
Four official DS4s; all first-generation versions of the white, black, red, and blue colors.
They map / work in ES just fine. RA does something, so that when any DS4 controller is connected, it isn't able to control the emulation, including the keyboard (Escape, Control-C, and the like do not work at this point). I am only able to shut down via unplug.
Again, other controllers like Xbox works out of the box. Only minor re-binding is necessary under RA when I choose between Bluetooth and wired (i.e. Guide button is #10 wired, #16 BT).

@gomisensei This is great news! I tried to find any reference to this on the official Raspberry pi github but could not find any information about this. But then again i could have missed it.