run visp_auto_tracker without display

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Hi, I am running my visp_auto_tracker with usb_cam remotely via ssh, without a screen attached to the robot. Visp_auto_tracker is encountering a display error as there is no screen to display the debug_display and the live stream to when i launch visp_auto_tracker.
How do I run Visp_auto_tracker without the debug_display and the live video stream in a window? I tried removing the output="screen" from the launch file and set "debug_display" value="False" from tracklive_usb.launch It did not work.

Thank you.