View file ProForum/Files/application/app/Http/Middleware/RedirectIfAuthenticated.php

<?php

namespace App\Http\Middleware;

use App\Providers\RouteServiceProvider;
use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class RedirectIfAuthenticated
{
    public function handle($request, Closure $next, $guard = null)
    {

        if (Auth::guard($guard)->check()) {
            return to_route('user.home');
        }

        return $next($request);

    }
}