Mcu 'mcu': Unable to connect or mcu 'EBBCan': Unable to connect

Basic Information: mcu ‘mcu’: Unable to connect or mcu ‘EBBCan’: Unable to connect

Printer Model: Voron 2.4
MCU / Printerboard: M8P+CB1

klippy (5).log (1.8 MB)
moonraker (1).log (732.2 KB)

Describe your issue:

Hi everyone, I am very new to using Klipper, Voron I recently finished is my first printer with this firmware, it is the Voron 2.4 Pro+ from Formbot, I uploaded the firmware to the main controller board M8P + CB1 with help of a YouTube video from user Butter Pockets Prints who coincidentally uploaded this extensive video shortly before I finished the printer where he explains in great detail many things, including uploading the firmware to the main board, I did everything exactly as he did.

But now Klipper still won’t start working. I repeatedly getting the message that mcu ‘mcu’: Unable to connect or mcu ‘EBBCan’: Unable to connect, each time either one or the other, now I really don’t know what the problem is, I would be very grateful for any feedback, I really need the printer to be functional already.

Video from Butter Pockets Prints: https://www.youtube.com/watch?v=7x-eafpESLc

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