Hello,
I am following along the YouTube tutorial (https://www.youtube.com/watch?v=qjVvfU6ShUU&list=PLx_tBuQ_KSqEt7NK-H7Lu78lT2OijwIMl&index=4&ab_channel=NordicSemiconductor) on how flash the Blinky code, however none of the LEDs turned on after I flashed it. Everything run fine on VS Code. What am I missing?