root@vps401738:/var/www/html# composer update --prefer-dist
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 2 updates, 0 removals
  - Updating bitaac/bitfabric (1.0.1 => 1.0.11): Downloading (100%)
  - Updating bitaac/theme-retro (1.0.1 => 1.0.11): Downloading (100%)
Package guzzle/guzzle is abandoned, you should avoid using it. Use guzzlehttp/guzzle instead.
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postUpdate
> php artisan optimize
Generating optimized class loader
The compiled services file has been removed.