Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - Root composer.json requires PHP extension ext-gd * but it is missing from your system. Install or enable PHP's gd extension. Problem 2 - Root composer.json requires PHP extension ext-mysqli * but it is missing from your system. Install or enable PHP's mysqli extension. To enable extensions, verify that they are enabled in your .ini files: - /etc/php.ini - /etc/php.d/20-bz2.ini - /etc/php.d/20-calendar.ini - /etc/php.d/20-ctype.ini - /etc/php.d/20-curl.ini - /etc/php.d/20-dom.ini - /etc/php.d/20-exif.ini - /etc/php.d/20-fileinfo.ini - /etc/php.d/20-ftp.ini - /etc/php.d/20-gettext.ini - /etc/php.d/20-iconv.ini - /etc/php.d/20-intl.ini - /etc/php.d/20-mbstring.ini - /etc/php.d/20-phar.ini - /etc/php.d/20-posix.ini - /etc/php.d/20-shmop.ini - /etc/php.d/20-simplexml.ini - /etc/php.d/20-sysvmsg.ini - /etc/php.d/20-sysvsem.ini - /etc/php.d/20-sysvshm.ini - /etc/php.d/20-tokenizer.ini - /etc/php.d/20-xml.ini - /etc/php.d/20-xmlwriter.ini - /etc/php.d/20-xsl.ini - /etc/php.d/30-xmlreader.ini - /etc/php.d/40-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-gd --ignore-platform-req=ext-mysqli` to temporarily ignore these required extensions.