Laravel升级到8版本后启动artisan serve抛出EncryptCookies参数类型错误

Laravel项目升级到8版本后，启动artisan serve服务时日志抛出如下错误：

local.ERROR: Argument 1 passed to Illuminate\Cookie\Middleware\EncryptCookies::encrypt() must be an instance of Symfony\Component\HttpFoundation\Response, null given, called in C:\xampp\htdocs\vipa\vendor\laravel\framework\src\Illuminate\Cookie\Middleware\EncryptCookies.php on line 67 {"exception":"[object] (TypeError(code: 0): Argument 1 passed to Illuminate\\Cookie\\Middleware\\EncryptCookies::encrypt() must be an instance of Symfony\\Component\\HttpFoundation\\Response, null given, called in C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Cookie\\Middleware\\EncryptCookies.php on line 67 at C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Cookie\\Middleware\\EncryptCookies.php:138)
[stacktrace]
#0 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Cookie\\Middleware\\EncryptCookies.php(67): Illuminate\\Cookie\\Middleware\\EncryptCookies->encrypt(NULL)
#1 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(167): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#2 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#3 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(697): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#4 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(672): Illuminate\\Routing\\Router->runRouteWithinStack(Object(Illuminate\\Routing\\Route), Object(Illuminate\\Http\\Request))
#5 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(636): Illuminate\\Routing\\Router->runRoute(Object(Illuminate\\Http\\Request), Object(Illuminate\\Routing\\Route))
#6 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(625): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))
#7 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php(167): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))
#8 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(128): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}(Object(Illuminate\\Http\\Request))
#9 C:\\xampp\\htdocs\\vipa\\vendor\\fideloper\\proxy\\src\\TrustProxies.php(57): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#10 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(167): Fideloper\\Proxy\\TrustProxies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#11 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#12 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\ConvertEmptyStringsToNull.php(31): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#13 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\ConvertEmptyStringsToNull->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#14 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#15 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TrimStrings.php(40): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#16 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\TrimStrings->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#17 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize.php(27): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#18 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#19 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance.php(86): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#20 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#21 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#22 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php(142): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#23 C:\\xampp\\htdocs\\vipa\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php(111): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Illuminate\\Http\\Request))
#24 C:\\xampp\\htdocs\\vipa\\public\\index.php(55): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))
#25 C:\\xampp\\htdocs\\vipa\\server.php(21): require_once('C:\\xampp\\htdocs...')
#26 {main}
"}

按以下操作即可修复该问题：

• 修改app/Exceptions/Handler.php文件内容为：

<?php

namespace App\Exceptions;

use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Throwable;

class Handler extends ExceptionHandler
{
    /**
     * A list of the exception types that are not reported.
     *
     * @var string[]
     */
    protected $dontReport = [
        //
    ];

    /**
     * A list of the inputs that are never flashed for validation exceptions.
     *
     * @var string[]
     */
    protected $dontFlash = [
        'current_password',
        'password',
        'password_confirmation',
    ];

    /**
     * Register the exception handling callbacks for the application.
     *
     * @return void
     */
    public function register()
    {
        $this->reportable(function (Throwable $e) {
            //
        });
    }
}

• 在app/Providers/RouteServiceProvider.php中添加HOME常量：

public const HOME = '/home';

内容的提问来源于stack exchange，提问作者Roberto