clrghouz/app/Http/Middleware/RedirectIfAuthenticated.php

<?php

namespace App\Http\Middleware;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

use App\Providers\RouteServiceProvider;

class RedirectIfAuthenticated
{
    /**
     * Handle an incoming request.
     *
     * @param Request $request
     * @param \Closure $next
     * @param string|null $guard
     * @return mixed
     */
    public function handle(Request $request,\Closure $next,?string $guard=NULL)
    {
        if (Auth::guard($guard)->check()) {
            return redirect(RouteServiceProvider::HOME);
        }

        return $next($request);
    }
}