firefly-iii/app/Providers/AuthServiceProvider.php

<?php
declare(strict_types = 1);

namespace FireflyIII\Providers;

use Illuminate\Contracts\Auth\Access\Gate as GateContract;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;

/**
 * Class AuthServiceProvider
 *
 * @package FireflyIII\Providers
 */
class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies
        = [
            'FireflyIII\Model' => 'FireflyIII\Policies\ModelPolicy',
        ];

    /**
     * Register any application authentication / authorization services.
     *
     * @param  \Illuminate\Contracts\Auth\Access\Gate $gate
     *
     * @return void
     */
    public function boot(GateContract $gate)
    {
        $this->registerPolicies($gate);

        //
    }
}