Fehler Enlight_Controller_Exception

Hallo, ich bekomme ganz gelegentlich diesen Fehler vom Shop per Mail zugesendet: exception 'Enlight\_Controller\_Exception' with message 'Controller "index.php" not found' in /www/htdocs/12346/shopware/engine/Library/Enlight/Controller/Dispatcher/Default.php:487 Stack trace: #0 /www/htdocs/12346/shopware/engine/Library/Enlight/Controller/Front.php(227): Enlight\_Controller\_Dispatcher\_Default-\>dispatch(Object(Enlight\_Controller\_Request\_RequestHttp), Object(Enlight\_Controller\_Response\_ResponseHttp)) #1 /www/htdocs/12346/shopware/engine/Shopware/Kernel.php(143): Enlight\_Controller\_Front-\>dispatch() #2 /www/htdocs/12346/shopware/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpCache/HttpCache.php(490): Shopware\Kernel-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #3 /www/htdocs/12346/shopware/engine/Shopware/Components/HttpCache/AppCache.php(255): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>forward(Object(Symfony\Component\HttpFoundation\Request), true, NULL) #4 /www/htdocs/12346/shopware/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpCache/HttpCache.php(447): Shopware\Components\HttpCache\AppCache-\>forward(Object(Symfony\Component\HttpFoundation\Request), true) #5 /www/htdocs/12346/shopware/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpCache/HttpCache.php(347): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>fetch(Object(Symfony\Component\HttpFoundation\Request), true) #6 /www/htdocs/12346/shopware/engine/Shopware/Components/HttpCache/AppCache.php(178): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>lookup(Object(Symfony\Component\HttpFoundation\Request), true) #7 /www/htdocs/12346/shopware/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpCache/HttpCache.php(211): Shopware\Components\HttpCache\AppCache-\>lookup(Object(Symfony\Component\HttpFoundation\Request), true) #8 /www/htdocs/12346/shopware/engine/Shopware/Components/HttpCache/AppCache.php(114): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #9 /www/htdocs/12346/shopware/shopware.php(101): Shopware\Components\HttpCache\AppCache-\>handle(Object(Symfony\Component\HttpFoundation\Request)) #10 {main} Kann mir jemand sagen, worum es hierbei geht?