Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - sebastian/diff is locked to version 7.0.0 and an update of this package was not requested. - sebastian/diff 7.0.0 requires php >=8.3 -> your php version (8.2.29) does not satisfy that requirement. Problem 2 - friendsofphp/php-cs-fixer is locked to version v3.88.2 and an update of this package was not requested. - friendsofphp/php-cs-fixer v3.88.2 requires sebastian/diff ^4.0.6 || ^5.1.1 || ^6.0.2 || ^7.0 -> satisfiable by sebastian/diff[7.0.0]. - sebastian/diff 7.0.0 requires php >=8.3 -> your php version (8.2.29) does not satisfy that requirement.