Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - ghostwriter/coding-standard is locked to version dev-main and an update of this package was not requested. - ghostwriter/coding-standard dev-main requires ext-intl * -> it is missing from your system. Install or enable PHP's intl extension. To enable extensions, verify that they are enabled in your .ini files: - C:\tools\php\php.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-intl` to temporarily ignore these required extensions.