我正在开发这个软件包：https://github.com/craftisan/laravel-seo作为laravel admin的扩展，虽然需要通过composer将其放入laravel项目中，但我遇到了以下错误（请参见此处的github问题）：

% composer require craftisan/laravel-seo --ignore-platform-reqs
Using version dev-master for craftisan/laravel-seo
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Installing craftisan/laravel-seo (dev-master 96e32bc): Cloning 96e32bc192 from cache
Package moontoast/math is abandoned, you should avoid using it. Use brick/math instead.
Package zendframework/zend-code is abandoned, you should avoid using it. Use laminas/laminas-code instead.
Package zendframework/zend-eventmanager is abandoned, you should avoid using it. Use laminas/laminas-eventmanager instead.
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 255

Installation failed, reverting ./composer.json to its original content.

我尝试调试了很多，检查了配置文件语法，甚至在artisan中从包中倾倒输出：发现命令，但什么也没找到。

存储/

你知道为什么会这样吗？