High voltage sparks coming from motor

Hi. What could be the problem here. When I am running the motor it creates high voltage discharge between motor housing and GND. Could it be related to the motor inductance, is it statics? Should I try to swap the Odrive, the motor, the powersupply?
Video here: Video

I would not mind but sometimes it reboots the system.
Thanks for your thoughts.

Hi! This is likely either caused by the triboelectric effect from the rope, or due to bearing currents. I’d recommend putting a conductive brush (called a grounding brush) in contact with the disc and connected to electrical ground.