I cannot remember what software it was, but some of our Ubuntu servers 2-3 years ago tried to auto update from a running piece of software to a snap based versi

I cannot remember what software it was, but some of our Ubuntu servers 2-3 years ago tried to auto update from a running piece of software to a snap based version, which failed, and then the process was killed or shut down. Needed manual intervention to rescue. It was a bit shocking at the time and I should have made some notes about this.