Warning: require_once(/htdocs/vendor/composer/autoload_real.php): Failed to open stream: No such file or directory in /htdocs/vendor/autoload.php on line 23

Fatal error: Uncaught Error: Failed opening required '/htdocs/vendor/composer/autoload_real.php' (include_path='.:/usr/share/php') in /htdocs/vendor/autoload.php:23 Stack trace: #0 /htdocs/public/index.php(22): require() #1 /htdocs/server.php(19): require_once('/htdocs/public/...') #2 {main} thrown in /htdocs/vendor/autoload.php on line 23