Motor Arm is not Horizontal in the Neutral Position
It is important to follow proper instructions for your motor if is an Encoder Based Motor or a Sensor Based Motor:
For Encoder Based Motors that appear as the image above, use the troubleshooting article here: https://dofreality.freshdesk.com/support/solutions/articles/151000200424-encoder-base-motor-troubleshooting-5-3-1-
For Sensor Based Motors that appear as the image above, use the troubleshooting article here: https://dofreality.freshdesk.com/support/solutions/articles/151000200425-sensor-based-motor-troubleshooting-5-3-2-
