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

Fatal error: Uncaught Error: Failed opening required '/var/www/vendor/composer/../symfony/polyfill-mbstring/bootstrap.php' (include_path='.:/usr/share/php') in /var/www/vendor/composer/autoload_real.php:41 Stack trace: #0 /var/www/vendor/composer/autoload_real.php(45): {closure}('0e6d7bf4a5811bf...', '/var/www/vendor...') #1 /var/www/vendor/autoload.php(25): ComposerAutoloaderInit5f4ca76570424d8df89878076ecd5434::getLoader() #2 /var/www/bootstrap/autoload.php(17): require('/var/www/vendor...') #3 /var/www/public/index.php(22): require('/var/www/bootst...') #4 {main} thrown in /var/www/vendor/composer/autoload_real.php on line 41