- laravel framework upgrade frpm 7.x to 8. see also: https://laravel.com/docs/8.x/upgrade#assert-exact-json-method

- use  PHP7 null coalesce operator instead of laravel optional method
- change Breadcrumbs::register method to Bredcrumbs::for method
- composer updates

app/Http/Middleware/RedirectIfAuthenticated.php

@@ -1,6 +1,7 @@
 <?php
 namespace App\Http\Middleware;
 
+use App\Providers\RouteServiceProvider;
 use Closure;
 use Illuminate\Support\Facades\Auth;
 
@@ -14,10 +15,17 @@ class RedirectIfAuthenticated
      * @param  \Closure  $next
      * @return mixed
      */
-    public function handle($request, Closure $next, $guard = null)
+    public function handle($request, Closure $next, $guards =  [null])
     {
-        if (Auth::guard($guard)->check()) {
-            return redirect('/home');
+        $guards = empty($guards) ? [null] : $guards;
+
+        // if (Auth::guard($guard)->check()) {
+        //     return redirect('/home');
+        // }
+        foreach ($guards as $guard) {
+            if (Auth::guard($guard)->check()) {
+                return redirect(RouteServiceProvider::HOME);
+            }
         }
 
         return $next($request);