Fatal error: Uncaught Error: Undefined constant "Patchwork\Utf8\MB_OVERLOAD_STRING" in /usr/www/users/ibrsro/contao/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php:45 Stack trace: #0 /usr/www/users/ibrsro/contao/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php(26): Patchwork\Utf8\Bootup::initMbstring() #1 /usr/www/users/ibrsro/contao/vendor/contao/core-bundle/src/Resources/functions/utf8_bootup.php(11): Patchwork\Utf8\Bootup::initAll() #2 /usr/www/users/ibrsro/contao/vendor/composer/autoload_real.php(66): require('/usr/www/users/...') #3 /usr/www/users/ibrsro/contao/vendor/composer/autoload_real.php(56): composerRequirecbcf482e216521431edb5651db1213b5() #4 /usr/www/users/ibrsro/contao/vendor/autoload.php(7): ComposerAutoloaderInitcbcf482e216521431edb5651db1213b5::getLoader() #5 /usr/www/users/ibrsro/contao/app/autoload.php(17): require('/usr/www/users/...') #6 /usr/www/users/ibrsro/contao/web/app.php(14): require('/usr/www/users/...') #7 {main} thrown in /usr/www/users/ibrsro/contao/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php on line 45