The keychain lacks a password for the already existing "Nix Store" volume

[citypaul]

Error

Error: 
   0: Planner error
   1: Error executing action
   2: Action `encrypt_apfs_volume` errored
   3: The keychain lacks a password for the already existing "Nix Store" volume on disk `disk3`, consider removing the volume with `diskutil apfs deleteVolume "Nix Store"` (if you receive error -69888, you may need to run `sudo launchctl bootout system/org.nixos.darwin-store` and `sudo launchctl bootout system/org.nixos.nix-daemon` first)

Metadata

key	value
version	0.30.0
os	macos
arch	aarch64

[cole-h]

If you do the suggestions in the error message, does that allow you to get further in the install process?