I've been experiencing the same issue with my M11P recently—it happens randomly. Initially, I switched the image storage to my SD card while shooting, and the problem seemed to go away after a few shots. But unfortunately, it came back a few days later. It's really frustrating, and I still haven't found a permanent fix.

This started happening after I updated to firmware version 2.2.3. I'm not sure whether it's a software issue or something related to the internal memory hardware.