diff --git a/script/processing.py b/script/processing.py
index 562b28f..d6c7c91 100644
--- a/script/processing.py
+++ b/script/processing.py
@@ -305,6 +305,7 @@ def run(stop_event, statistics, parameter_queue, cam_client, pipeline_config, ou
         print ("Pass")
         sender = get_sender()
         if sender:
+            import traceback
             print ("Sender")
             try:
                 sender.close()