Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - composer/composer is locked to version 2.7.8 and an update of this package was not requested. - composer/composer 2.7.8 requires symfony/polyfill-php73 ^1.24 -> could not be found in any version, there may be a typo in the package name. Problem 2 - symfony/polyfill-intl-idn is locked to version v1.30.0 and an update of this package was not requested. - symfony/polyfill-intl-idn v1.30.0 requires symfony/polyfill-php72 ^1.10 -> could not be found in any version, there may be a typo in the package name. Problem 3 - twig/twig is locked to version v3.12.0 and an update of this package was not requested. - twig/twig v3.12.0 requires symfony/polyfill-php81 ^1.29 -> could not be found in any version, there may be a typo in the package name. Problem 4 - symfony/mime is locked to version v7.1.4 and an update of this package was not requested. - symfony/mime v7.1.4 requires symfony/polyfill-intl-idn ^1.10 -> satisfiable by symfony/polyfill-intl-idn[v1.30.0]. - symfony/polyfill-intl-idn v1.30.0 requires symfony/polyfill-php72 ^1.10 -> could not be found in any version, there may be a typo in the package name. Potential causes: - A typo in the package name - The package is not available in a stable-enough version according to your minimum-stability setting see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details. - It's a private package and you forgot to add a custom repository to find it Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.