我在试着安装一个老版本的laravel,它给了我[InvalidArgumentException] Could not find package laravel/laravel with version5.8.* in a version installable using your PHP version, PHP extensions and Composer version.x64 ) Copyright (c) The PHP Group Zend Engine v4.0.0-dev, Copyrigh
compatible with Illuminate\Foundation\Exceptions\Handler::report(Throwable $e) in /Users/yasmin/projects/laravel/idtrue-laravel/app/Exceptions/Handler.php on line 8
当我试图将App\Exceptions\Handler.php Laravel5.8更新为Laravel</