重新安装应用程序:'服务提供商未找到'

我尝试将我的应用程序从5.1升级到5.2 &遇到了一些问题。我需要我的应用程序回到一个工作状态，所以我重新上传了我在系统上备份的旧版本。然而，它仍然不工作，因为它是以前，我得到这个错误:

FatalErrorException in ProviderRepository.php line 146: Class 'Lavary'Menu'ServiceProvider' not found

在尝试运行任何编写器命令

$ composer update
> php artisan clear-compiled

  [Symfony'Component'Debug'Exception'FatalThrowableError]
  Fatal error: Class 'Lavary'Menu'ServiceProvider' not found

Script php artisan clear-compiled handling the pre-update-cmd event returned with an error

  [RuntimeException]
  Error Output:

update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--with-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [-i|--interactive] [--root-reqs] [--] [<packages>]...