Query\Builder::keyBy does not exist (Laravel) - laravel

Question

I've created a command and I am trying to query my database and group my results by a key but I keep recieving this error:
In Builder.php line 2512:
Method Illuminate\Database\Query\Builder::keyBy does not exist.
Laravel version is 5.6.4
Command code:
<?php
namespace App\Console\Commands;
use App\User;
use Illuminate\Console\Command;
class TwitchPointScanner extends Command
{
/**
* The name and signature of the console command.
*
* #var string
*/
protected $signature = 'command:twitchPointScanner';
/**
* The console command description.
*
* #var string
*/
protected $description = 'Twitch Point Scanner';
/**
* Create a new command instance.
*
* #return void
*/
public function __construct()
{
parent::__construct();
}
/**
* Execute the console command.
*
* #return mixed
*/
public function handle()
{
$usersDistributors = User::where('point_distributor', 1)
->inRandomOrder()
->get();
$usersTwitchVerified = User::where('point_distributor', 0)
->whereNotNull('twitch_username')
->keyBy('twitch_username')
->get();
$this->line('Distributors ---');
foreach($usersDistributors as $user) {
$this->line($user->id . ': '.$user->twitch_username);
}
$this->line('Point gainers ---');
foreach($usersTwitchVerified as $user) {
$this->line($user->id . ': '.$user->twitch_username);
}
}
}

Answer 1

keyBy is a collection method, so you need to get the data first:
$usersTwitchVerified = User::where('point_distributor', 0)
->whereNotNull('twitch_username')
->get()
->keyBy('twitch_username');