Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/console ^4.3 || ^5.4 || ^6.0 -> satisfiable by symfony/console[v6.4.0, ..., v6.4.10]. - symfony/console[v6.4.0, ..., v6.4.10] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 2 - Root composer.json requires symfony/expression-language ^4.3 || ^5.4 || ^6.0 -> satisfiable by symfony/expression-language[v6.4.0, ..., v6.4.8]. - symfony/expression-language[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 3 - Root composer.json requires symfony/config ^4.3 || ^5.4 || ^6.2 -> satisfiable by symfony/config[v6.4.0, ..., v6.4.8]. - symfony/config[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 4 - Root composer.json requires symfony/asset ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/asset[v6.4.0, v6.4.3, v6.4.7, v6.4.8]. - symfony/asset[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 5 - Root composer.json requires symfony/browser-kit ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/browser-kit[v6.4.0, v6.4.3, v6.4.7, v6.4.8]. - symfony/browser-kit[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 6 - Root composer.json requires symfony/css-selector ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/css-selector[v6.4.0, v6.4.3, v6.4.7, v6.4.8]. - symfony/css-selector[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 7 - Root composer.json requires symfony/security-csrf ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/security-csrf[v6.4.0, v6.4.3, v6.4.7, v6.4.8]. - symfony/security-csrf[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 8 - Root composer.json requires symfony/templating ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/templating[v6.4.0, v6.4.3, v6.4.7, v6.4.8]. - symfony/templating[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 9 - Root composer.json requires symfony/property-access ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/property-access[v6.4.0, ..., v6.4.8]. - symfony/property-access[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 10 - Root composer.json requires symfony/routing ^4.4.15 || ^5.4 || ^6.4 -> satisfiable by symfony/routing[v6.4.0, ..., v6.4.10]. - symfony/routing[v6.4.0, ..., v6.4.10] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 11 - Root composer.json requires symfony/twig-bundle ^4.4 || ^5.4 || ^6.4 -> satisfiable by symfony/twig-bundle[v6.4.0, ..., v6.4.8]. - symfony/twig-bundle[v6.4.0, ..., v6.4.8] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. Problem 12 - symfony/framework-bundle[v6.4.0, ..., v6.4.10] require php >=8.1 -> your php version (8.0.30) does not satisfy that requirement. - Root composer.json requires symfony/framework-bundle ^4.3 || ^5.4 || ^6.0 -> satisfiable by symfony/framework-bundle[v6.4.0, ..., v6.4.10].

Could not find package phpunit/phpunit with version 8.3.* in a version installable using your PHP version, PHP extensions and Composer version.

Could not read composer.json The file "composer.json" is not readable.