Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ~8.3.14 but your php version (8.3.12) does not satisfy that requirement. Problem 2 - Root composer.json requires phly/keep-a-changelog ^2.13.2 -> satisfiable by phly/keep-a-changelog[2.13.2]. - phly/keep-a-changelog 2.13.2 requires laminas/laminas-diactoros ^3.3 -> found laminas/laminas-diactoros[3.3.0, 3.3.1, 3.4.0, 3.5.0] but it conflicts with your root composer.json require (^2.26.0). Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.