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(1/1) InvalidSortOrderDirectionException

Invalid SortOrder direction `desc?order=product`. Expecting one of: `ASC`, `DESC`, or `RANDOM`.

in SortOrder.php line 199
at SortOrder->setDirection('desc?order=product')in SortOrder.php line 67
at SortOrder->__construct('product', 'price', 'desc?order=product')in SortOrder.php line 125
at SortOrder::newFromString('product.price.desc?order=product.price.desc')in ProductListingFrontController.php line 286
at ProductListingFrontControllerCore->getProductSearchVariables()in ProductListingFrontController.php line 580
at ProductListingFrontControllerCore->doProductSearch('catalog/listing/manufacturer', array('entity' => 'manufacturer', 'id' => 6))in ManufacturerController.php line 88
at ManufacturerControllerCore->initContent()in Controller.php line 292
at ControllerCore->run()in Dispatcher.php line 515
at DispatcherCore->dispatch()in index.php line 28