从Laravel 6升级laravel 7抛错255

Question

我刚刚尝试将Laravel从v6升级到v7，我的php版本为7.3，我升级了laravel站点上的所有依赖项，并删除了冲突的包，升级似乎已经完成，但有以下错误：

Generating optimized autoload files> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
PHP Fatal error:  Declaration of App\Exceptions\Handler::report(Exception $exception) must be compatible with Illuminate\Foundation\Exceptions\Handler::report(Throwable $e) in /var/www/html/virtuozzo-api/app/Exceptions/Handler.php on line 8
PHP Fatal error:  Uncaught ReflectionException: Class App\Exceptions\Handler does not exist in /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Container/Container.php:803
Stack trace:
#0 /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Container/Container.php(803): ReflectionClass->__construct('App\\Exceptions\\...')
#1 /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Container/Container.php(681): Illuminate\Container\Container->build('App\\Exceptions\\...')
#2 /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(787): Illuminate\Container\Container->resolve('App\\Exceptions\\...', Array, false)
#3 /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Container/Container.php(265): Illuminate\Foundation\Application->resolve('App\\Exceptions\\...', Array, false)
#4 /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Container/Container.php(799): Illuminate\Container\Container->Illuminate\Container\{cl in /var/www/html/virtuozzo-api/vendor/laravel/framework/src/Illuminate/Container/Container.php on line 805
Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 255

我已经尝试删除供应商文件夹和重新安装，也使用composer转储自动加载，并试图清除laravel缓存，但始终得到相同的错误。

Answer 1

在app/Exceptions/Handler.php文件中:将Exception类型提示替换为Throwable类型提示。

正如升级指南中提到的那样。

Answer 2

这就是区别

​

这是更新的文件，

<?php

namespace App\Exceptions;

use Exception;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;
use Throwable;

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

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

    /**
     * Report or log an exception.
     *
     * @param Throwable $exception
     * @return void
     *
     * @throws Exception
     */
    public function report(Throwable $exception)
    {
        parent::report($exception);
    }

    /**
     * Render an exception into an HTTP response.
     *
     * @param Request $request
     * @param Throwable $exception
     * @return Response
     *
     * @throws Throwable
     */
    public function render($request, Throwable $exception)
    {
        return parent::render($request, $exception);
    }
}