RPI 4 -- the original revision. Whenever I ran it off the "official" power supply, I got disk errors. As soon as I moved over to a powered USB hub, I had no other issues. This was also with a keyboard and mouse plugged in, so maybe that had something to do with it.
I was also trying to run it as a NAS, so it had a decent amount of IO.
Maybe it could have been fixed with a better power supply, but switching over to the powered hub was easier to figure out.