diff --git a/bootstrap.py b/bootstrap.py
index ba099a0..8316955 100644
--- a/bootstrap.py
+++ b/bootstrap.py
@@ -76,7 +76,7 @@ def home():
   return Response(headers={'Access-Control-Allow-Origin': '*'})
 
 
-sh.debug_mode = True
+sh.debug_mode = False
 
 threading.Thread(target=sh.expired_sessions_collector, daemon=True, args="5").start()
 app.run(port=15789, host="0.0.0.0", debug=sh.debug_mode)
diff --git a/hub_api/control/session.py b/hub_api/control/session.py
index 18fc783..3a1f37e 100644
--- a/hub_api/control/session.py
+++ b/hub_api/control/session.py
@@ -7,7 +7,7 @@ Copyright © 2022 Project Author name guillermo.gutierrezmorote@concordia.ca
 import datetime
 import json
 import uuid
-
+from sqlalchemy.exc import SQLAlchemyError
 from flask import request, Response
 from flask_restful import Resource
 
@@ -25,7 +25,7 @@ class SessionStart(Resource, Config):
     try:
       application_uuid = uuid.UUID(request.headers.get('application-uuid', None))
       user_info = self.database.user_login(name=username, password=password, application_uuid=application_uuid)
-    except ValueError:
+    except (ValueError, SQLAlchemyError, TypeError):
       return Response(json.dumps({'error': 'unauthorized'}), status=403)
     ip = request.remote_addr
     if user_info:
diff --git a/hub_api/helpers/session_helper.py b/hub_api/helpers/session_helper.py
index 5fff078..038506d 100644
--- a/hub_api/helpers/session_helper.py
+++ b/hub_api/helpers/session_helper.py
@@ -24,8 +24,6 @@ def expired_sessions_collector(session_timeout_duration):
   while True:
     if bool(sessions):
       for session_uuid in sessions:
-        print(sessions)
-        print(sessions[session_uuid]['expire'])
         _expire = datetime.datetime.strptime(sessions[session_uuid]['expire'], '%Y-%m-%d %H:%M:%S.%f')
         if _expire < datetime.datetime.now():
           print("session for user: ", sessions[session_uuid]['user'], "expired.")