diff --git a/__init__.py b/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/app.py b/app.py
index a5f67f2..0d99fa7 100644
--- a/app.py
+++ b/app.py
@@ -1,13 +1,8 @@
+import logging
 from datetime import datetime
-from pandas.api.types import (
-    is_categorical_dtype,
-    is_datetime64_any_dtype,
-    is_numeric_dtype,
-    is_object_dtype,
-)
+
 import pandas as pd
 import streamlit as st
-import logging
 
 from utils.mongo import MongoSingleton
 from utils.process_guild_data import process_guild_data
@@ -43,6 +38,6 @@ def load_guilds_latest_date_df():
 logging.basicConfig(level=logging.INFO)
 
 st.subheader("MongoDB data Analytics")
-df = load_guilds_latest_date_df()
+load_guilds_latest_date_df()
 # df = process_df(df)
 # st.dataframe(df, use_container_width=True, hide_index=True)
diff --git a/tests/unit/test_sample.py b/tests/unit/test_sample.py
index 26a96e6..4b2d323 100644
--- a/tests/unit/test_sample.py
+++ b/tests/unit/test_sample.py
@@ -3,4 +3,4 @@
 
 class TestSample(TestCase):
     def test_sample(self):
-        self.assertEqual(True, True)
\ No newline at end of file
+        self.assertEqual(True, True)
diff --git a/utils/creds.py b/utils/creds.py
index 6f6d3a2..eebade7 100644
--- a/utils/creds.py
+++ b/utils/creds.py
@@ -1,6 +1,7 @@
-from dotenv import load_dotenv
 import os
 
+from dotenv import load_dotenv
+
 
 def get_mongo_credentials():
     """
diff --git a/utils/mongo_base.py b/utils/mongo_base.py
index ab3fe25..214993b 100644
--- a/utils/mongo_base.py
+++ b/utils/mongo_base.py
@@ -24,7 +24,6 @@ def get_guild_members_count(self) -> int:
     def get_latest_document(
         self, db_name: str, collection_name: str, date_field: str, **kwargs
     ) -> dict[str, Any]:
-
         filters = kwargs.get("filters", None)
         client = MongoSingleton.get_instance().client
         if filters is None:
diff --git a/utils/mongo_utils.py b/utils/mongo_utils.py
index 9dcb8e4..6421881 100644
--- a/utils/mongo_utils.py
+++ b/utils/mongo_utils.py
@@ -1,4 +1,5 @@
 from datetime import datetime
+
 from utils.mongo_base import MongoBase
 
 
@@ -6,7 +7,7 @@ class MongoUtils(MongoBase):
     def __init__(self, guild_id: str) -> None:
         super().__init__(guild_id)
 
-    def get_latest_discord_raw_info_date(self) -> datetime:
+    def get_latest_discord_raw_info_date(self) -> datetime | None:
         date_field = "createdDate"
         latest_document = self.get_latest_document(
             db_name=self.guild_id, collection_name="rawinfos", date_field=date_field
@@ -20,18 +21,18 @@ def get_latest_memberactivities_date(self) -> str:
             collection_name="memberactivities",
             date_field=date_field,
         )
-        return self.get_latest_date(latest_document, date_field)
+        return self.get_latest_date(latest_document, date_field)  # type: ignore
 
     def get_latest_heatmaps_date(self) -> str:
         date_field = "date"
         latest_document = self.get_latest_document(
             db_name=self.guild_id, collection_name="heatmaps", date_field=date_field
         )
-        return self.get_latest_date(latest_document, date_field)
+        return self.get_latest_date(latest_document, date_field)  # type: ignore
 
     def get_latest_fired_saga(
         self, guild_id: str | None = None, platform_id: str | None = None
-    ) -> datetime:
+    ) -> datetime | None:
         date_field = "createdAt"
         if platform_id:
             latest_document = self.get_latest_document(