Warning: require(/var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/composer/ClassLoader.php): Failed to open stream: No such file or directory in /var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/composer/autoload_real.php on line 12

Fatal error: Uncaught Error: Failed opening required '/var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/composer/ClassLoader.php' (include_path='.:/usr/share/php') in /var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/composer/autoload_real.php:12 Stack trace: #0 /var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/composer/autoload_real.php(23): ComposerAutoloaderInita1decdcce965d6d314e4aab422ac4b13::loadClassLoader() #1 /var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/autoload.php(7): ComposerAutoloaderInita1decdcce965d6d314e4aab422ac4b13::getLoader() #2 /var/www/lagbe/application/libraries/PhpSpreadsheet/src/Bootstrap.php(16): require_once('...') #3 /var/www/lagbe/application/libraries/PhpSpreadsheet/samples/Header.php(9): require_once('...') #4 /var/www/lagbe/application/libraries/PhpSpreadsheet/samples/index.php(3): require_once('...') #5 {main} thrown in /var/www/lagbe/application/libraries/PhpSpreadsheet/vendor/composer/autoload_real.php on line 12