After updating to 15.4 my Mac mini m4 Pro "randomly" crash and reboot everyday with no reason...

1) What USB Hub and WD drives do you have..?

To many bus powered external drives plugged into the Mac mini and/or into a bus powered hub can create power problems for the Mac mini.

The best practice, is to use a self-powered USB Hub for more than two bus powered external drives.

2) Full Computer Sleep Mode can cause a problem for these new Silicon Mac mini's.

As a test, Turn On "Prevent automatic sleeping when display is off"

Set "Turn display off when inactive" to 5 or 10 minutes

Leave the Mac Mini On and only allow the display(s) to turn Off

Do not manually Sleep from the Apple Drop Down menu

Shut Down the Mac when away for a day or more

3) Contact and send Feedback to Apple about this issue.

Contact - How to Contact Us - Apple

Feedback - Mac mini - Apple

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