I faced the same problem when trying to run two SSDs connected via USB in btrfs raid0. I used a cheap 30W power brick from amazon. You can see dmsg warnings about this. Look for low voltage/current. Problems were resolved after using the official Raspberry 5 power brick.
this update broke my installation :(. I have not updated it in a while. Now I have to rollback until I fix this. Hope the backup will work. EDIT: It was the reverse proxy. Check the developer notes before updating.