Unknown application command permissions

guild.commands.fetch().then(commands => {
    commands.forEach(command => {
        command.permissions.fetch().then(perms => {
            console.log(perms)
        });
    });
});

guild.commands.fetch().then(commands => {
    commands.forEach(command => {
        command.permissions.fetch().then(perms => {
            console.log(perms)
        });
    });
});