Your requirements could not be resolved to an installable set of packages.
Problem 1
afosto/yaac[v1.2.0, ..., v1.2.3] require guzzlehttp/guzzle ^6.3 -> found guzzlehttp/guzzle[6.3.0, ..., 6.5.x-dev] but it conflicts with your root composer.json require (^7.0.1).
Laravel version: 8.20.1
composer require afosto/yaac
Installation failed
Your requirements could not be resolved to an installable set of packages.
Problem 1