我使用的是 mac，在命令行中，我登錄到服務器，想安裝作曲家，但是我遇到了一些問題（見下文）。我不需要 PHP 單元，所以我也嘗試過composer install --no-dev，但出現了同樣的錯誤。任何想法或解決方案？Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. It is recommended that you run `composer update` or `composer update <package name>`.Your requirements could not be resolved to an installable set of packages.  Problem 1    - Installation request for tijsverkoyen/css-to-inline-styles 2.2.2 -> satisfiable by tijsverkoyen/css-to-inline-styles[2.2.2].    - tijsverkoyen/css-to-inline-styles 2.2.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.  Problem 2    - tijsverkoyen/css-to-inline-styles 2.2.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.    - laravel/framework v7.3.0 requires tijsverkoyen/css-to-inline-styles ^2.2.2 -> satisfiable by tijsverkoyen/css-to-inline-styles[2.2.2].    - Installation request for laravel/framework v7.3.0 -> satisfiable by laravel/framework[v7.3.0].我還嘗試通過 Sudo 安裝 tijsverkoyen 并收到另一個問題列表Problem 1    - phpunit/phpunit 8.5.x-dev requires ext-dom * -> the requested PHP extension dom is missing from your system.    - phpunit/phpunit 8.5.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.    - phpunit/phpunit 8.5.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.    - phpunit/phpunit 8.5.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.    - phpunit/phpunit 8.5.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.    - Installation request for phpunit/phpunit ^8.5 -> satisfiable by phpunit/phpunit[8.5.0, 8.5.1, 8.5.2, 8.5.3, 8.5.x-dev].