Your requirements could not be resolved to an installable set of packages. Problem 1 - vimeo/psalm[5.0.0-beta1, ..., 5.0.0-rc1] require php ^7.4 || ~8.0.0 || ~8.1.0 -> your php version (8.2.12) does not satisfy that requirement. - vimeo/psalm[5.0.0, ..., 5.15.0] require symfony/console ^4.1.6 || ^5.0 || ^6.0 -> found symfony/console[v4.1.6, ..., v4.4.49, v5.0.0-BETA1, ..., v5.4.28, v6.0.0-BETA1, ..., v6.4.0-BETA1] but these were not loaded, likely because it conflicts with another require. - Root composer.json requires vimeo/psalm ^5.0 -> satisfiable by vimeo/psalm[5.0.0-beta1, ..., 5.15.0].