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(1/1) Exception

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

in SortOrder.php line 120
at SortOrder->setDirection('desc?order=product')in SortOrder.php line 43
at SortOrder->__construct('product', 'price', 'desc?order=product')in SortOrder.php line 77
at SortOrder::newFromString('product.price.desc?order=product.price.desc')in ProductListingFrontController.php line 290
at ProductListingFrontControllerCore->getProductSearchVariables()in ProductListingFrontController.php line 545
at ProductListingFrontControllerCore->doProductSearch('catalog/listing/category', array('entity' => 'category', 'id' => 702))in CategoryController.php line 137
at CategoryControllerCore->initContent()in Controller.php line 281
at ControllerCore->run()in Dispatcher.php line 511
at DispatcherCore->dispatch()in index.php line 28