Fatal error: Uncaught Error: Call to undefined function Shopware\Recovery\Common\Service\mb_strlen() in /var/www/Shopware/recovery/common/src/Service/UniqueIdGenerator.php:72 Stack trace: #0 /var/www/Shopware/recovery/common/src/Service/UniqueIdGenerator.php(56): Shopware\Recovery\Common\Service\UniqueIdGenerator->generateUniqueId() #1 /var/www/Shopware/recovery/install/src/ContainerProvider.php(216): Shopware\Recovery\Common\Service\UniqueIdGenerator->getUniqueId() #2 /var/www/Shopware/recovery/common/vendor/pimple/pimple/src/Pimple/Container.php(113): Shopware\Recovery\Install\ContainerProvider->Shopware\Recovery\Install\{closure}(Object(Pimple\Container)) #3 /var/www/Shopware/recovery/install/src/app.php(206): Pimple\Container->offsetGet('shopware.notify') #4 [internal function]: {closure}() #5 /var/www/Shopware/recovery/common/vendor/slim/slim/Slim/Route.php(462): call_user_func_array(Object(Closure), Array) #6 /var/www/Shopware/recovery/common/vendor/slim/slim/Slim/Slim.php(1326): Slim\Route->dispatch() #7 /var/www/S in /var/www/Shopware/recovery/common/src/Service/UniqueIdGenerator.php on line 72