Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - psr/container is locked to version 1.1.2 and an update of this package was not requested. - psr/container 1.1.2 requires php >=7.4.0 -> your php version (7.2.34) does not satisfy that requirement. Problem 2 - psr/container 1.1.2 requires php >=7.4.0 -> your php version (7.2.34) does not satisfy that requirement. - symfony/service-contracts v2.5.2 requires psr/container ^1.1 -> satisfiable by psr/container[1.1.2]. - symfony/service-contracts is locked to version v2.5.2 and an update of this package was not requested.