Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - symfony/string is locked to version v7.1.5 and an update of this package was not requested. - symfony/string v7.1.5 requires php >=8.2 -> your php version (8.1.2) does not satisfy that requirement. Problem 2 - symfony/console is locked to version v6.4.12 and an update of this package was not requested. - symfony/console v6.4.12 requires symfony/string ^5.4|^6.0|^7.0 -> satisfiable by symfony/string[v7.1.5]. - symfony/string v7.1.5 requires php >=8.2 -> your php version (8.1.2) does not satisfy that requirement.