I'm new to nucleo boards I got a program from my teacher that I could download it to the board, and it worked, but now whenever I download the program to nucleo-f401re I get internal command error. also I noticed something , when I connect my board to my laptop LD1 is red and LD3 is red but when I shake the usb wire a little Ld1 turns green! I'm using uvision v5.23 and I updated the board too! please help!