[Dell R6525] Comm Error: Backplane 1 / Comm Error: Power 1

Hello guys,

I have a Dell R6525 server (AMD Zen) and I have the following errors popping in my dashboard:

The System Configuration Check operation resulted in the following issue: Comm Error: Backplane 1

The System Configuration Check operation resulted in the following issue: Comm Error: Power 1.

What can it be? The system works ok, apparently.

Besides this, I don't have any errors in System or Storage tabs in the iDRAC web admin.