diff --git a/sams_classes/sams_hub.py b/sams_classes/sams_hub.py
index fa727debbd58595bd976561b5cc49e4663463729..eb06b95a3da1effed1f3a7a7bcb0bdc9a865d328 100644
--- a/sams_classes/sams_hub.py
+++ b/sams_classes/sams_hub.py
@@ -1,18 +1,17 @@
-from flask import Flask, request, session
-from .exceptions import (
-  ManifestDefaultLanguageMissing
-  , DefaultLanguageDictMissing
-  , AppNotExist
-  , FunctionNotExists
-)
+import sys
+import os
 from typing import Dict, List
 from importlib import import_module
-#from .exceptions import HubDirNotExist, FunctionNotExists
-#from importlib import import_module
+
+from flask import Flask, request, session
+
 from .sams_app import SAMSApp
-from .exceptions import FunctionNotExists
-from optparse import Values
-import sys
+from .exceptions import (
+  ManifestDefaultLanguageMissing,
+  DefaultLanguageDictMissing,
+  AppNotExist,
+  FunctionNotExists
+)
 
 def eprint(*args, **kwargs):
   print(*args, file=sys.stderr, **kwargs)