The web community says this is an indication of a hardware problem, possibly a bad connection, and it can be intermittent. Suggestions include running Apple's Hardware Diagnostic Test and/or taking it in to Apple.
On a Mac since 1984. Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.
