diff --git a/src/backend/langflow/database/models/user.py b/src/backend/langflow/database/models/user.py
index 2d6b9bbf7..144e71fae 100644
--- a/src/backend/langflow/database/models/user.py
+++ b/src/backend/langflow/database/models/user.py
@@ -1,10 +1,7 @@
 from datetime import datetime
 from sqlalchemy.orm import Session
 
-from langflow.services.database.models.base import (
-    SQLModelSerializable,
-    SQLModel
-)
+from langflow.services.database.models.base import SQLModelSerializable, SQLModel
 from sqlmodel import Field
 from uuid import UUID, uuid4
 
diff --git a/src/backend/langflow/main.py b/src/backend/langflow/main.py
index e9e3dc3a1..b63caff24 100644
--- a/src/backend/langflow/main.py
+++ b/src/backend/langflow/main.py
@@ -80,8 +80,7 @@ def setup_app(
         static_files_dir = get_static_files_dir()
 
     if not backend_only and (not static_files_dir or not static_files_dir.exists()):
-        raise RuntimeError(
-            f"Static files directory {static_files_dir} does not exist.")
+        raise RuntimeError(f"Static files directory {static_files_dir} does not exist.")
     app = create_app()
     if not backend_only and static_files_dir is not None:
         setup_static_files(app, static_files_dir)
diff --git a/src/backend/langflow/routers/login.py b/src/backend/langflow/routers/login.py
index 1b889cdad..48cdd11dc 100644
--- a/src/backend/langflow/routers/login.py
+++ b/src/backend/langflow/routers/login.py
@@ -20,7 +20,8 @@ def create_user_token(user: str) -> dict:
     access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
     access_token = create_access_token(
         # type: ignore
-        data={"sub": user.username}, expires_delta=access_token_expires
+        data={"sub": user.username},
+        expires_delta=access_token_expires,
     )
 
     return {"access_token": access_token, "token_type": "bearer"}