Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - Root composer.json requires PHP extension ext-parallel * but it is missing from your system. Install or enable PHP's parallel extension. Problem 2 - react-parallel/event-loop is locked to version dev-master and an update of this package was not requested. - react-parallel/event-loop dev-master requires ext-parallel * -> it is missing from your system. Install or enable PHP's parallel extension. Problem 3 - react-parallel/runtime is locked to version dev-master and an update of this package was not requested. - react-parallel/runtime dev-master requires ext-parallel * -> it is missing from your system. Install or enable PHP's parallel extension. Problem 4 - react-parallel/pool-tests is locked to version dev-PHP-8.2-PLUS and an update of this package was not requested. - react-parallel/pool-tests dev-PHP-8.2-PLUS requires ext-parallel * -> it is missing from your system. Install or enable PHP's parallel extension. Problem 5 - react-parallel/event-loop dev-master requires ext-parallel * -> it is missing from your system. Install or enable PHP's parallel extension. - react-parallel/event-loop 2.0 is an alias of react-parallel/event-loop dev-master and thus requires it to be installed too. - react-parallel/event-loop is locked to version 2.0 and an update of this package was not requested. To enable extensions, verify that they are enabled in your .ini files: - /usr/local/etc/php/8.3/php.ini - /usr/local/etc/php/8.3/conf.d/20-pcov.ini - /usr/local/etc/php/8.3/conf.d/30-ds.ini - /usr/local/etc/php/8.3/conf.d/ext-opcache.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-parallel` to temporarily ignore these required extensions.