My passwords have disappeared from System Settings.

Thanks for the response! There is not an app "Passwords" in the Applications folder, or in the Utilities folder. If it was in either of those locations, it is gone now. I also checked two previous Time Machine backups, and it is not there either. I went into a panic over this, so I went back into "System Settings" "Passwords" and rebuilt the list by re-adding all of the critical passwords, one by one, after changing each one. I've used Macs since 1996, and have never seen anything like this, have never had data disappear, thought it was weird, so I thought I would ask the experts.