Warning: require(/var/www/html/site/vendor/composer/../symfony/polyfill-mbstring/bootstrap.php): Failed to open stream: No such file or directory in /var/www/html/site/vendor/composer/autoload_real.php on line 41

Fatal error: Uncaught Error: Failed opening required '/var/www/html/site/vendor/composer/../symfony/polyfill-mbstring/bootstrap.php' (include_path='.:/usr/share/php') in /var/www/html/site/vendor/composer/autoload_real.php:41 Stack trace: #0 /var/www/html/site/vendor/composer/autoload_real.php(45): {closure:ComposerAutoloaderInit2f992bd3a65209139a1efcb24489d967::getLoader():37}() #1 /var/www/html/site/vendor/autoload.php(22): ComposerAutoloaderInit2f992bd3a65209139a1efcb24489d967::getLoader() #2 /var/www/html/site/public/index.php(34): require('...') #3 /var/www/html/index.php(6): require('...') #4 {main} thrown in /var/www/html/site/vendor/composer/autoload_real.php on line 41