Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^11.0 -> satisfiable by phpunit/phpunit[11.0.0, 11.0.x-dev]. - phpunit/phpunit[11.0.0, ..., 11.0.x-dev] require php >=8.2 -> your php version (7.2.34) does not satisfy that requirement. Problem 2 - Root composer.json requires psr/container 2.0.2 -> satisfiable by psr/container[2.0.2]. - psr/container 2.0.2 requires php >=7.4.0 -> your php version (7.2.34) does not satisfy that requirement. Problem 3 - Root composer.json requires symfony/config ^7.0 -> satisfiable by symfony/config[v7.0.0-BETA1, ..., 7.1.x-dev]. - symfony/config[v7.0.0-BETA1, ..., 7.1.x-dev] require php >=8.2 -> your php version (7.2.34) does not satisfy that requirement. Problem 4 - Root composer.json requires symfony/console ^7.0 -> satisfiable by symfony/console[v7.0.0-BETA1, ..., 7.1.x-dev]. - symfony/console[v7.0.0-BETA1, ..., 7.1.x-dev] require php >=8.2 -> your php version (7.2.34) does not satisfy that requirement. Problem 5 - Root composer.json requires symfony/http-foundation ^7.0 -> satisfiable by symfony/http-foundation[v7.0.0-BETA1, ..., 7.1.x-dev]. - symfony/http-foundation[v7.0.0-BETA1, ..., 7.1.x-dev] require php >=8.2 -> your php version (7.2.34) does not satisfy that requirement. Problem 6 - Root composer.json requires symfony/messenger ^7.0 -> satisfiable by symfony/messenger[v7.0.0-BETA1, ..., 7.1.x-dev]. - symfony/messenger[v7.0.0-BETA1, ..., 7.1.x-dev] require php >=8.2 -> your php version (7.2.34) does not satisfy that requirement. Problem 7 - Root composer.json requires symfony/serializer ^7.0 -> satisfiable by symfony/serializer[v7.0.0-BETA1, ..., 7.1.x-dev]. - symfony/serializer[v7.0.0-BETA1, ..., 7.1.x-dev] require php >=8.2 -> your php version (7.2.34) does not satisfy that requirement. Problem 8 - symfony/service-contracts[dev-main, v3.3.0, ..., 3.5.x-dev] require php >=8.1 -> your php version (7.2.34) does not satisfy that requirement. - symfony/service-contracts[v3.0.0, ..., 3.0.x-dev] require php >=8.0.2 -> your php version (7.2.34) does not satisfy that requirement. - symfony/service-contracts 3.5.x-dev is an alias of symfony/service-contracts dev-main and thus requires it to be installed too. - Root composer.json requires symfony/service-contracts ^3.0.0 -> satisfiable by symfony/service-contracts[v3.0.0, ..., 3.5.x-dev (alias of dev-main)].