Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - giggsey/locale is locked to version 2.6 and an update of this package was not requested. - giggsey/locale 2.6 requires php >=7.2 -> your php version (5.6.40) does not satisfy that requirement. Problem 2 - symfony/polyfill-mbstring is locked to version v1.30.0 and an update of this package was not requested. - symfony/polyfill-mbstring v1.30.0 requires php >=7.1 -> your php version (5.6.40) does not satisfy that requirement. Problem 3 - giggsey/locale 2.6 requires php >=7.2 -> your php version (5.6.40) does not satisfy that requirement. - giggsey/libphonenumber-for-php 8.13.44 requires giggsey/locale ^1.7|^2.0 -> satisfiable by giggsey/locale[2.6]. - giggsey/libphonenumber-for-php is locked to version 8.13.44 and an update of this package was not requested.