One possibility for the missing fulldump last night is that there wasn't enough battery left to create it. (I had left my laptop sleeping while I slept, but not plugged in, and it had a dirty shutdown sometime before I got up.) However... I didn't see any minidump either, so *maybe* there's some problem with my SSD firmware (as darkly suggested in the checklist at -us/windows/forum/windows_10-update/bsod-finding-and-fixing-them/1939df35-283f-4830-a4dd-e95ee5d8669d. However... my laptop's mfr Lenovo isn't suggesting any SSD firmware update to what they shipped with my ThinkPad 13 2nd Gen.
Well it's crashing only about once a week, and only when I let it sleep, so it's not too hard to avoid -- I have other things to do in my life than diagnose this BSOD!