Your requirements could not be resolved to an installable set of packages. Problem 1 - phpoffice/phpspreadsheet[1.28.0, ..., 1.29.0] require ext-gd * -> it is missing from your system. Install or enable PHP's gd extension. - Root composer.json requires phpoffice/phpspreadsheet ^1.28 -> satisfiable by phpoffice/phpspreadsheet[1.28.0, 1.29.0]. To enable extensions, verify that they are enabled in your .ini files: - /usr/local/etc/php/conf.d/docker-php-ext-sodium.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-gd` to temporarily ignore these required extensions.