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Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires PHP extension ext-redis * but it is missing from your system. Install or enable PHP's redis 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-redis` to temporarily ignore these required extensions.