Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/dependency-injection ^7.1.9 -> satisfiable by symfony/dependency-injection[v7.1.9]. - symfony/dependency-injection v7.1.9 requires php >=8.2 -> your php version (8.0.99; overridden via config.platform, actual: 8.1.31) does not satisfy that requirement. Problem 2 - Root composer.json requires behat/behat ^3.14.0 -> satisfiable by behat/behat[v3.14.0, v3.15.0, v3.16.0]. - behat/behat[v3.14.0, ..., v3.15.0] require symfony/dependency-injection ^4.4 || ^5.0 || ^6.0 || ^7.0 -> satisfiable by symfony/dependency-injection[v7.1.9]. - behat/behat v3.16.0 requires php 8.1.* || 8.2.* || 8.3.* || 8.4.* -> your php version (8.0.99; overridden via config.platform, actual: 8.1.31) does not satisfy that requirement. - symfony/dependency-injection v7.1.9 requires php >=8.2 -> your php version (8.0.99; overridden via config.platform, actual: 8.1.31) does not satisfy that requirement. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.