hactool --keyset=/path/to/prod.keys game.nsp
If you do not have the file at all, you must dump it from your own console. hactool prod.keys does not exist
You can also specify a custom path using the --keyset option: hactool --keyset=/path/to/prod
It looks like you're encountering an issue where hactool (a tool for interacting with Nintendo Switch file formats) cannot find the prod.keys file. This file is essential for decrypting and extracting Nintendo Switch content. hactool prod.keys does not exist