I need to have a download history for each user that will use our system (basically, a system for users to download social media posts). I created a "DownloadHistory" model that contains the ID, Timestamp, download_history, and user_id fields. When I create a user, an instance of DownloadHistory should be automatically created and the users table updated to have the field download_history_id to contain the newly created DownloadHistory's id, as shown in my RegisterController:

$downloadHistory = DownloadHistory::create([
    'user_id' => $user->id
]);

DB::table('users')->where('id', $user->id)->update(['download_history_id' => $downloadHistory->id]);

The problem is: I get an error which makes no sense to me:

The reason it doesn't make sense to me is that I never created download_history, but I did create download_history, so what is this? ? ? My DownloadHistory model is:

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class DownloadHistory extends Model
{
    use HasFactory;

    protected $fillable = [
        'user_id',
    ];

    protected $casts = [
       'downloads' => 'array',
    ];

    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

The migration I created for the table is:

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateDownloadHistoryTable extends Migration
{  
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('download_history', function (Blueprint $table) {
            $table->id();                        
            $table->timestamps();
            $table->json('history');
            $table->integer('user_id');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('download_history');
    }
}