laravel update报In PackageManifest.php line 122:Undefined index: name 错误的解决办法

用 composer 更新 laravel依赖包时报错

> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi

In PackageManifest.php line 122:

  Undefined index: name


Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1

错误提示:
In PackageManifest.php line 122:

Undefined index: name

Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1

可能是composer.lock中没有记录的第三方扩展，但是已经创建了服务提供者provider等

解决办法

找到

vendor/laravel/framework/src/Illuminate/Foundation/PackageManifest.php

把116行

$packages = json_decode($this->files->get($path), true);

改成

$installed = json_decode($this->files->get($path), true);
$packages = $installed['packages'] ?? $installed;

然后再

composer update

就可以了