BookStack/database/seeds/DatabaseSeeder.php

<?php

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;

class DatabaseSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        Model::unguard();

        // $this->call(UserTableSeeder::class);
        \Oxbow\User::create([
            'name' => 'Admin',
            'email' => 'admin@admin.com',
            'password' => \Illuminate\Support\Facades\Hash::make('password')
        ]);

        Model::reguard();
    }
}