C:\xampp\htdocs\selfcomply>composer require dompdf/dompdf
Using version ^0.8.1 for dompdf/dompdf
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Writing lock file
Generating autoload files
> Illuminate\Foundation\ComposerScripts::postUpdate
> php artisan optimize
[37;41m [39;49m
[37;41m [Symfony\Component\Debug\Exception\FatalThrowableError] [39;49m
[37;41m Class 'Zizaco\Entrust\EntrustServiceProvider' not found [39;49m
[37;41m [39;49m
Script php artisan optimize handling the post-update-cmd event returned with error code 1
Installation failed, reverting ./composer.json to its original content.
我在项目中安装dompdf软件包时遇到此错误， 任何人都可以帮助我。