diff --git a/controller/user/manager.py b/controller/user/manager.py
index dd804947..df1094b8 100644
--- a/controller/user/manager.py
+++ b/controller/user/manager.py
@@ -128,7 +128,8 @@ def __migrate_kratos_users():
     for user_database in users_database:
         user_id = str(user_database.id)
         user_identity = users_kratos[user_id]["identity"]
-
+        if users_kratos[user_id] is None:
+            continue
         if user_database.email != user_identity["traits"]["email"]:
             user_database.email = user_identity["traits"]["email"]
         if (
diff --git a/fast_api/routes/organization.py b/fast_api/routes/organization.py
index 3cec77d4..322117cd 100644
--- a/fast_api/routes/organization.py
+++ b/fast_api/routes/organization.py
@@ -289,7 +289,7 @@ def get_mapped_sorted_paginated_users(
             "organization": user.organization_name,
             "email": user.email,
             "verified": user.verified,
-            "created_at": user.created_at.isoformat(),
+            "created_at": user.created_at.isoformat() if user.created_at else None,
             "metadata_public": user.metadata_public,
             "sso_provider": user.sso_provider,
         }