Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires ocramius/code-generator-utils ^1.7.0 -> satisfiable by ocramius/code-generator-utils[1.7.0]. - ocramius/code-generator-utils 1.7.0 requires nikic/php-parser ^4.15.3 -> found nikic/php-parser[v4.15.3, ..., v4.19.4] but it conflicts with your root composer.json require (^5.3.1). Problem 2 - vimeo/psalm 5.13.1 requires php ^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0 -> your php version (8.3.12) does not satisfy that requirement. - vimeo/psalm[5.14.0, ..., 5.25.0] require nikic/php-parser ^4.16 -> found nikic/php-parser[v4.16.0, ..., v4.19.4] but it conflicts with your root composer.json require (^5.3.1). - vimeo/psalm[5.26.0, ..., 5.26.1] require nikic/php-parser ^4.17 -> found nikic/php-parser[v4.17.0, ..., v4.19.4] but it conflicts with your root composer.json require (^5.3.1). - Root composer.json requires vimeo/psalm ^5.13.1 -> satisfiable by vimeo/psalm[5.13.1, ..., 5.26.1]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.