PH2.1 UNBOXING and issue with Led

i am unboxing my PH2.1 and i power it up for the very first time.

i have noticed that LEDs set at the junction between the Cube and the carrier board are not functionning. Got same resukt whatever the power is (eg either connected through battery nor connected with USB cable to PC )

Is it hw faillure ?

any idea ?

thanks for any feeback