Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires enlightn/security-checker ^2.0 -> satisfiable by enlightn/security-checker[v2.0.0]. - Root composer.json requires symfony/yaml ^6.4.26 || ^7.4.1 -> satisfiable by symfony/yaml[v6.4.26, v6.4.30, v7.4.1]. - Root composer.json requires vimeo/psalm ^4.30.0 -> satisfiable by vimeo/psalm[4.30.0]. - enlightn/security-checker v2.0.0 requires symfony/console ^7 -> satisfiable by symfony/console[v7.0.0, ..., v7.4.4]. - symfony/console[v4.1.6, ..., v4.4.8] require php ^7.1.3 -> your php version (8.3.26) does not satisfy that requirement. - symfony/console[v5.0.0, ..., v5.0.8] require php ^7.2.5 -> your php version (8.3.26) does not satisfy that requirement. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v5.3.16. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v5.3.10. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v5.3.2. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v5.2.14. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v5.2.11. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v5.0.11. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v4.4.49. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v4.4.26. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v3.4.47. - symfony/yaml[v6.4.26, ..., v6.4.30] conflict with symfony/console v3.4.21. - vimeo/psalm 4.30.0 requires symfony/console ^3.4.17 || ^4.1.6 || ^5.0 || ^6.0 -> satisfiable by symfony/console[v3.4.17, ..., v3.4.47, v4.1.6, ..., v4.4.49, v5.0.0, ..., v5.4.47, v6.0.0, ..., v6.4.32]. - Conclusion: don't install symfony/console v6.2.13 (conflict analysis result) - Conclusion: don't install symfony/console v6.3.12 (conflict analysis result) - Conclusion: don't install symfony/console v6.4.32 (conflict analysis result) - Conclusion: don't install symfony/console v7.3.10 (conflict analysis result) - Conclusion: don't install symfony/console v7.4.4 (conflict analysis result) - Conclusion: don't install symfony/yaml v7.4.1 (conflict analysis result) - You can only install one version of a package, so only one of these can be installed: symfony/console[v3.4.0, ..., v3.4.47, v4.1.6, ..., v4.4.49, v5.0.0, ..., v5.4.47, v6.0.0, ..., v6.4.32, v7.0.0, ..., v7.4.4, v8.0.0, v8.0.1, v8.0.3, v8.0.4]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.