diff --git a/instagrapi/auth.py b/instagrapi/auth.py
index a299e6db..ae96f246 100644
--- a/instagrapi/auth.py
+++ b/instagrapi/auth.py
@@ -16,7 +16,7 @@
 
 class PreLoginFlow:
     def pre_login_flow(self) -> bool:
-        """Эмуляция работы приложения до логина
+        """Emulation mobile app behaivor before login
         """
         # /api/v1/accounts/get_prefill_candidates
         self.get_prefill_candidates(True)
@@ -76,9 +76,9 @@ def set_contact_point_prefill(self, usage: str = "prefill") -> dict:
         return self.private_request("accounts/contact_point_prefill/", data, login=True)
 
 
-class LoginFlow:
+class PostLoginFlow:
     def login_flow(self) -> bool:
-        """Эмуляция работы приложения после логина
+        """Emulation mobile app behaivor after login
         """
         check_flow = []
         chance = random.randint(1, 100) % 2 == 0
@@ -145,12 +145,17 @@ def get_reels_tray_feed(self, reason: str = "pull_to_refresh") -> dict:
         return self.private_request("feed/reels_tray/", data)
 
 
-class Login(PreLoginFlow, LoginFlow):
+class Login(PreLoginFlow, PostLoginFlow):
     username = None
     password = None
     last_login = None
     relogin_attempt = 0
     device_settings = {}
+    client_session_id = ""
+    advertising_id = ""
+    device_id = ""
+    phone_id = ""
+    uuid = ""
 
     def init(self) -> bool:
         if "cookies" in self.settings:
diff --git a/instagrapi/types.py b/instagrapi/types.py
index 14c9b367..bcaae8f8 100644
--- a/instagrapi/types.py
+++ b/instagrapi/types.py
@@ -5,7 +5,7 @@
 
 class Resource(BaseModel):
     pk: int
-    video_url: Optional[HttpUrl] = ''  # for Video and IGTV
+    video_url: Optional[HttpUrl]  # for Video and IGTV
     thumbnail_url: HttpUrl
     media_type: int
 
@@ -21,7 +21,7 @@ class User(BaseModel):
     follower_count: int
     following_count: int
     biography: Optional[str] = ''
-    external_url: Optional[HttpUrl] = ''
+    external_url: Optional[HttpUrl]
     is_business: bool
 
 
@@ -29,7 +29,7 @@ class UserShort(BaseModel):
     pk: int
     username: str
     full_name: Optional[str] = ''
-    profile_pic_url: Optional[HttpUrl] = ''
+    profile_pic_url: Optional[HttpUrl]
     # is_private: bool
     # is_verified: bool
 
@@ -49,7 +49,7 @@ class Location(BaseModel):
     external_id: Optional[int]
     external_id_source: Optional[str]
     # address_json: Optional[dict] = {}
-    # profile_pic_url: Optional[HttpUrl] = ''
+    # profile_pic_url: Optional[HttpUrl]
     # directory: Optional[dict] = {}
 
 
@@ -60,14 +60,14 @@ class Media(BaseModel):
     taken_at: datetime
     media_type: int
     product_type: Optional[str] = ''  # only for IGTV
-    thumbnail_url: Optional[HttpUrl] = ''
+    thumbnail_url: Optional[HttpUrl]
     location: Optional[Location] = None
     user: UserShort
     comment_count: int
     like_count: int
     caption_text: str
     usertags: List[Usertag]
-    video_url: Optional[HttpUrl] = ''  # for Video and IGTV
+    video_url: Optional[HttpUrl]  # for Video and IGTV
     view_count: Optional[int] = 0  # for Video and IGTV
     video_duration: Optional[float] = 0.0  # for Video and IGTV
     title: Optional[str] = ''
diff --git a/tests.py b/tests.py
index 169cb3bb..bc1187ec 100644
--- a/tests.py
+++ b/tests.py
@@ -464,7 +464,7 @@ def test_extract_media_album(self):
             else:
                 self.assertEqual(getattr(video_resource, key), val)
         for key, val in {
-            "video_url": "",
+            "video_url": None,
             "thumbnail_url": "https://",
             "media_type": 1,
             "pk": 1787133803186894424,