Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires wp-cli/wp-cli dev-main -> satisfiable by wp-cli/wp-cli[dev-main]. - wp-cli/wp-cli dev-main requires php >=7.2.24 || ^8.0 -> your php version (5.6; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. Problem 2 - wp-cli/cache-command is locked to version v2.2.0 and an update of this package was not requested. - wp-cli/cache-command v2.2.0 requires wp-cli/wp-cli ^2.12 -> satisfiable by wp-cli/wp-cli[2.13.x-dev (alias of dev-main)]. - wp-cli/wp-cli dev-main requires php >=7.2.24 || ^8.0 -> your php version (5.6; overridden via config.platform, actual: 7.4.33) does not satisfy that requirement. - wp-cli/wp-cli 2.13.x-dev is an alias of wp-cli/wp-cli dev-main and thus requires it to be installed too.