How to install composer on server

Fatal error: require(): Failed opening required ‘/storage/ssd2/631/13737631/public_html/…/vendor/autoload.php’ (include_path=’.:/usr/share/pear:/usr/share/php’) in /storage/ssd2/631/13737631/public_html/index.php on line 24

@BiswashShrestha Sorry you can’t install composer on our free platform.