Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires PHP extension ext-redis ^4.3 || ^5.0.2 but it has the wrong version installed (6.0.0). To enable extensions, verify that they are enabled in your .ini files: - /etc/php/8.0/cli/php.ini - /etc/php/8.0/cli/conf.d/10-opcache.ini - /etc/php/8.0/cli/conf.d/10-pdo.ini - /etc/php/8.0/cli/conf.d/15-xml.ini - /etc/php/8.0/cli/conf.d/20-bz2.ini - /etc/php/8.0/cli/conf.d/20-calendar.ini - /etc/php/8.0/cli/conf.d/20-ctype.ini - /etc/php/8.0/cli/conf.d/20-curl.ini - /etc/php/8.0/cli/conf.d/20-dom.ini - /etc/php/8.0/cli/conf.d/20-exif.ini - /etc/php/8.0/cli/conf.d/20-ffi.ini - /etc/php/8.0/cli/conf.d/20-fileinfo.ini - /etc/php/8.0/cli/conf.d/20-ftp.ini - /etc/php/8.0/cli/conf.d/20-gettext.ini - /etc/php/8.0/cli/conf.d/20-iconv.ini - /etc/php/8.0/cli/conf.d/20-igbinary.ini - /etc/php/8.0/cli/conf.d/20-intl.ini - /etc/php/8.0/cli/conf.d/20-mbstring.ini - /etc/php/8.0/cli/conf.d/20-phar.ini - /etc/php/8.0/cli/conf.d/20-posix.ini - /etc/php/8.0/cli/conf.d/20-readline.ini - /etc/php/8.0/cli/conf.d/20-redis.ini - /etc/php/8.0/cli/conf.d/20-shmop.ini - /etc/php/8.0/cli/conf.d/20-simplexml.ini - /etc/php/8.0/cli/conf.d/20-sockets.ini - /etc/php/8.0/cli/conf.d/20-sysvmsg.ini - /etc/php/8.0/cli/conf.d/20-sysvsem.ini - /etc/php/8.0/cli/conf.d/20-sysvshm.ini - /etc/php/8.0/cli/conf.d/20-tokenizer.ini - /etc/php/8.0/cli/conf.d/20-xmlreader.ini - /etc/php/8.0/cli/conf.d/20-xmlwriter.ini - /etc/php/8.0/cli/conf.d/20-xsl.ini - /etc/php/8.0/cli/conf.d/20-zip.ini - /etc/php/8.0/cli/conf.d/99-settings.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.