Dont know why i cant process images

Im in Rescue Dron exercise.

When I try this
image
It give me this error


In main I have

Hi @al_cab_mo,

as I suugested in a previous response (How to load cascade? - #6 by jmplaza), /RoboticsAcademy/exercises/static/exercises/rescue_people_newmanager/haarcascade_frontalface_default.xml is a valid configuration file. Use it in the cv.CascadeClassifier call.

In addition use cv2.CascadeClassifer. not cv.CascadeClassifier!

Hello.

I saw the mistake, it was that sometimes Drone didnt send the images, i couldnt see them in simulation flying with the drone when this error ocurred, when they showed it worked