No display callback

Hi, i’m trying to run object detection on multiple zed 2i cameras. I modified the custom detection to kick off 2 jobs and things start up but when it tries to open the viewer window it says:

ERROR: No display callback registered for window 1

Has anyone encountered this before?


Can you show us the code, so that we can check if there is anything wrong ?


i just commented out the gl viewer. The problem seems to be in there but i dont have time to debug so i just removed it.