Mcu shutdown, timer too close. no usb manta m5p

Regardless if CAN or USB the typical reasons are always the same. All reasons that we know are listed in Timer too close.

You also have lots of:

b'Got error -1 in can write: (105)No buffer space available'

Make sure, you have setup your CAN bus according to CANBUS - Klipper documentation and that you are using the same CAN speed everywhere. In addition check CANBUS Troubleshooting - Klipper documentation

Not sure that I understand this part correctly. Follow GitHub - bigtreetech/EBB and make sure to select the correct version of the board.

This has to work, or something else is amiss.