Не работают оплаты по Робокассе Есть решение

Добрый день! Перестала работать оплата по Робокассе. Выдает ошибку 500 при переходе по ссылке оплаты. В Логах следующее пишет:

pay/7d896fa01c686099545107d37f398b6d7c47/ Uncaught exception waPaymentException: Ошибка при расчёте сумм. (500) ## wa-plugins/payment/robokassa/lib/robokassaPayment.class.php(400) #0 wa-plugins/payment/robokassa/lib/robokassaPayment.class.php(288): robokassaPayment::queryXmlService('CalcOutSumm', Array) #1 wa-plugins/payment/robokassa/lib/robokassaPayment.class.php(53): robokassaPayment->getCommission(4261) #2 wa-apps/shop/plugins/pay/lib/classes/shopPayPluginLink.class.php(82): robokassaPayment->payment(Array, Object(waOrder), true) #3 wa-apps/shop/plugins/pay/lib/actions/shopPayPluginFrontend.action.php(8): shopPayPluginLink->getPaymentForm() #4 wa-system/controller/waViewAction.class.php(188): shopPayPluginFrontendAction->execute() #5 wa-system/controller/waViewController.class.php(86): waViewAction->display() #6 wa-system/controller/waDefaultViewController.class.php(48): waViewController->executeAction(Object(shopPayPluginFrontendAction)) #7 wa-system/controller/waController.class.php(21): waDefaultViewController->execute() #8 wa-system/controller/waViewController.class.php(46): waController->run(NULL) #9 wa-system/controller/waFrontController.class.php(263): waViewController->run(NULL) #10 wa-apps/shop/lib/classes/shopFrontController.class.php(22): waFrontController->runController(Object(waDefaultViewController), NULL) #11 wa-system/controller/waFrontController.class.php(190): shopFrontController->runController(Object(waDefaultViewController), NULL) #12 wa-system/controller/waFrontController.class.php(84): waFrontController->execute('pay', 'frontend', '') #13 wa-system/controller/waDispatch.class.php(369): waFrontController->dispatch() #14 wa-system/controller/waDispatch.class.php(34): waDispatch->dispatchFrontend('pay/7d896fa01c6...') #15 wa-system/waSystem.class.php(610): waDispatch->dispatch() #16 index.php(7): waSystem->dispatch()