diff --git a/MEDfl/NetManager/database_connector.py b/MEDfl/NetManager/database_connector.py
index ad85ab1..a363abe 100644
--- a/MEDfl/NetManager/database_connector.py
+++ b/MEDfl/NetManager/database_connector.py
@@ -3,6 +3,7 @@
 from sqlalchemy import create_engine
 from configparser import ConfigParser
 
+
 class DatabaseManager:
     def __init__(self):
         from MEDfl.LearningManager.utils import load_db_config