Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nethergamesmc/pocketmine-mp dev-stable -> satisfiable by nethergamesmc/pocketmine-mp[dev-stable]. - nethergamesmc/pocketmine-mp dev-stable requires ext-encoding ~1.0.0 -> it has the wrong version installed (0.4.0). To enable extensions, verify that they are enabled in your .ini files: - /home/runner/work/InvMenu/InvMenu/bin/php7/bin/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-encoding` to temporarily ignore these required extensions.