Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - phar-io/manifest is locked to version 1.0.3 and an update of this package was not requested. - phar-io/manifest 1.0.3 requires php ^5.6 || ^7.0 -> your php version (8.1.2) does not satisfy that requirement. Problem 2 - phar-io/version is locked to version 2.0.1 and an update of this package was not requested. - phar-io/version 2.0.1 requires php ^5.6 || ^7.0 -> your php version (8.1.2) does not satisfy that requirement. Problem 3 - phpspec/prophecy is locked to version v1.10.3 and an update of this package was not requested. - phpspec/prophecy v1.10.3 requires php ^5.3|^7.0 -> your php version (8.1.2) does not satisfy that requirement. Problem 4 - phpunit/php-code-coverage is locked to version 6.1.4 and an update of this package was not requested. - phpunit/php-code-coverage 6.1.4 requires php ^7.1 -> your php version (8.1.2) does not satisfy that requirement. Problem 5 - phpunit/phpunit is locked to version 7.5.20 and an update of this package was not requested. - phpunit/phpunit 7.5.20 requires php ^7.1 -> your php version (8.1.2) does not satisfy that requirement. Problem 6 - sebastian/global-state is locked to version 2.0.0 and an update of this package was not requested. - sebastian/global-state 2.0.0 requires php ^7.0 -> your php version (8.1.2) does not satisfy that requirement. Problem 7 - phpunit/phpunit 7.5.20 requires php ^7.1 -> your php version (8.1.2) does not satisfy that requirement. - yoast/phpunit-polyfills 1.0.3 requires phpunit/phpunit ^4.8.36 || ^5.7.21 || ^6.0 || ^7.0 || ^8.0 || ^9.0 -> satisfiable by phpunit/phpunit[7.5.20]. - yoast/phpunit-polyfills is locked to version 1.0.3 and an update of this package was not requested.