Laravel 5.8

app/Http/Controllers/Auth/RegisterController.php

@@ -51,7 +51,7 @@ class RegisterController extends Controller
         $rules = [
             'name' => 'required|string|regex:/^[a-zA-Z0-9_-]+$/u|max:15|unique:users|unique:deactivated_users',
             'email' => 'required|string|email|max:255|unique:users',
-            'password' => 'required|string|min:6|confirmed'
+            'password' => 'required|string|min:8|confirmed'
         ];
 
         // reCAPTCHAのキーが設定されている場合、判定を有効化

app/Http/Kernel.php

@@ -14,11 +14,11 @@ class Kernel extends HttpKernel
      * @var array
      */
     protected $middleware = [
+        \App\Http\Middleware\TrustProxies::class,
         \App\Http\Middleware\CheckForMaintenanceMode::class,
         \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
         \App\Http\Middleware\TrimStrings::class,
         \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,
-        \App\Http\Middleware\TrustProxies::class,
     ];
 
     /**

app/Http/Middleware/TrustProxies.php

@@ -10,7 +10,7 @@ class TrustProxies extends Middleware
     /**
      * The trusted proxies for this application.
      *
-     * @var array
+     * @var array|string
      */
     protected $proxies = '**';