Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - phpgt/daemon is locked to version v1.1.4 and an update of this package was not requested. - phpgt/daemon v1.1.4 requires ext-pcntl * -> it is missing from your system. Install or enable PHP's pcntl extension. Problem 2 - phpgt/cli is locked to version v1.3.5 and an update of this package was not requested. - phpgt/cli v1.3.5 requires phpgt/daemon ^1.1.3 -> satisfiable by phpgt/daemon[v1.1.4]. - phpgt/daemon v1.1.4 requires ext-pcntl * -> it is missing from your system. Install or enable PHP's pcntl extension. To enable extensions, verify that they are enabled in your .ini files: - /usr/local/etc/php/conf.d/docker-php-ext-sodium.ini - /usr/local/etc/php/conf.d/docker-php-ext-zip.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-pcntl` to temporarily ignore these required extensions.