Improve error handling when executing a custorder batch

tailbone/views/custorders/orders.py

@@ -779,9 +779,13 @@ class CustomerOrderView(MasterView):
                 'batch': self.normalize_batch(batch)}
 
     def submit_new_order(self, batch, data):
-        result = self.execute_new_order_batch(batch, data)
-        if not result:
-            return {'error': "Batch failed to execute"}
+        try:
+            result = self.execute_new_order_batch(batch, data)
+        except Exception as error:
+            return {'error': six.text_type(error)}
+        else:
+            if not result:
+                return {'error': "Batch failed to execute"}
 
         next_url = None
         if isinstance(result, model.CustomerOrder):