Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires simplesamlphp/assert ^3.0, found simplesamlphp/assert[dev-dependabot/github_actions/all-actions-1a2ef7c42f, dev-master, dev-release-0.6, dev-release-0.8, dev-bugfix/1.8.3, v0.0.1, ..., v0.8.0, v1.0.0, ..., 1.10.x-dev (alias of dev-master), v2.0.0, v2.0.1, v2.0.2] but it does not match the constraint. Problem 2 - Root composer.json requires simplesamlphp/simplesamlphp ^2.5@dev -> satisfiable by simplesamlphp/simplesamlphp[v2.5.0-rc3, v2.5.0-rc5, v2.5.0-rc6]. - simplesamlphp/simplesamlphp v2.5.0-rc3 requires simplesamlphp/assert ^1.9 -> found simplesamlphp/assert[v1.9.0, v1.9.1] but it conflicts with your root composer.json require (^3.0). - simplesamlphp/simplesamlphp v2.5.0-rc5 requires simplesamlphp/assert ~1.9 -> found simplesamlphp/assert[v1.9.0, v1.9.1] but it conflicts with your root composer.json require (^3.0). - simplesamlphp/simplesamlphp v2.5.0-rc6 requires simplesamlphp/assert ~2.0 -> found simplesamlphp/assert[v2.0.0, v2.0.1, v2.0.2] but it conflicts with your root composer.json require (^3.0).