Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires PHP extension ext-pdo * but it is missing from your system. Install or enable PHP's pdo extension. Alternatively you can require one of these packages that provide the extension (or parts of it): Keep in mind that the suggestions are automated and may not be valid or safe to use - wl4837/maotool 🐶 PHP工具类库 更加快速的开发项目 便捷优雅的使用类库 Problem 2 - Root composer.json requires phpunit/phpunit ^7.5 || ^8.5 || ^9.5 -> satisfiable by phpunit/phpunit[8.5.52, 9.6.33, 9.6.34]. - phpunit/phpunit[8.5.52, 9.6.33, ..., 9.6.34] require ext-xml * -> it is missing from your system. Install or enable PHP's xml extension. Alternatively you can require one of these packages that provide the extension (or parts of it): Keep in mind that the suggestions are automated and may not be valid or safe to use - nephre/php-dbus DBUS bindings for PHP language To enable extensions, verify that they are enabled in your .ini files: - /etc/php84/php.ini - /etc/php84/conf.d/00_ctype.ini - /etc/php84/conf.d/00_curl.ini - /etc/php84/conf.d/00_dom.ini - /etc/php84/conf.d/00_iconv.ini - /etc/php84/conf.d/00_intl.ini - /etc/php84/conf.d/00_mbstring.ini - /etc/php84/conf.d/00_openssl.ini - /etc/php84/conf.d/00_simplexml.ini - /etc/php84/conf.d/00_tokenizer.ini - /etc/php84/conf.d/00_xmlwriter.ini - /etc/php84/conf.d/01_phar.ini - /etc/php84/conf.d/10_igbinary.ini You can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode. Alternatively, you can run Composer with `--ignore-platform-req=ext-pdo --ignore-platform-req=ext-xml` to temporarily ignore these required extensions.