Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php ^8.3 but your php version (8.2.30) does not satisfy that requirement. Problem 2 - Root composer.json requires simplesamlphp/xml-ws-trust, it could not be found in any version, there may be a typo in the package name. Problem 3 - Root composer.json requires simplesamlphp/saml11 ^2.1 -> satisfiable by simplesamlphp/saml11[v2.1.0]. - simplesamlphp/saml11 v2.1.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 4 - Root composer.json requires simplesamlphp/xml-security ^2.1 -> satisfiable by simplesamlphp/xml-security[v2.1.0, v2.1.1, v2.1.2]. - simplesamlphp/xml-security[v2.1.0, ..., v2.1.2] require php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 5 - Root composer.json requires simplesamlphp/xml-soap ^2.1 -> satisfiable by simplesamlphp/xml-soap[v2.1.0, v2.1.1]. - simplesamlphp/xml-soap[v2.1.0, ..., v2.1.1] require php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 6 - Root composer.json requires simplesamlphp/xml-wsdl ^2.1 -> satisfiable by simplesamlphp/xml-wsdl[v2.1.0]. - simplesamlphp/xml-wsdl v2.1.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 7 - Root composer.json requires simplesamlphp/xml-wss-core ^1.2 -> satisfiable by simplesamlphp/xml-wss-core[v1.2.0]. - simplesamlphp/xml-wss-core v1.2.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 8 - Root composer.json requires simplesamlphp/xml-ws-addressing ^1.1 -> satisfiable by simplesamlphp/xml-ws-addressing[v1.1.0]. - simplesamlphp/xml-ws-addressing v1.1.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 9 - Root composer.json requires simplesamlphp/xml-ws-federation ^1.0 -> satisfiable by simplesamlphp/xml-ws-federation[v1.0.0]. - simplesamlphp/xml-ws-federation v1.0.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 10 - Root composer.json requires simplesamlphp/xml-ws-policy ^1.1 -> satisfiable by simplesamlphp/xml-ws-policy[v1.1.0]. - simplesamlphp/xml-ws-policy v1.1.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 11 - Root composer.json requires simplesamlphp/xml-ws-security-policy ^1.0 -> satisfiable by simplesamlphp/xml-ws-security-policy[v1.0.0, v1.0.1, v1.0.2]. - simplesamlphp/xml-ws-security-policy[v1.0.0, ..., v1.0.2] require php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 12 - Root composer.json requires simplesamlphp/simplesamlphp-test-framework ~1.11 -> satisfiable by simplesamlphp/simplesamlphp-test-framework[v1.11.0]. - simplesamlphp/simplesamlphp-test-framework v1.11.0 requires php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Problem 13 - Root composer.json requires simplesamlphp/xml-common ^2.5 -> satisfiable by simplesamlphp/xml-common[v2.5.0, ..., v2.5.6]. - simplesamlphp/xml-common[v2.5.0, ..., v2.5.6] require php ^8.3 -> your php version (8.2.30) does not satisfy that requirement. Potential causes: - A typo in the package name - The package is not available in a stable-enough version according to your minimum-stability setting see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details. - It's a private package and you forgot to add a custom repository to find it Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.