diff --git a/src/backend/langflow/api/v1/chat.py b/src/backend/langflow/api/v1/chat.py
index 0eae10c64..262defed6 100644
--- a/src/backend/langflow/api/v1/chat.py
+++ b/src/backend/langflow/api/v1/chat.py
@@ -16,7 +16,7 @@ from cachetools import LRUCache
 
 router = APIRouter(tags=["Chat"])
 chat_manager = ChatManager()
-flow_data_store = LRUCache(maxsize=10)
+flow_data_store: LRUCache = LRUCache(maxsize=10)
 
 
 @router.websocket("/chat/{client_id}")
diff --git a/src/backend/langflow/main.py b/src/backend/langflow/main.py
index 3ef1de338..1989aad01 100644
--- a/src/backend/langflow/main.py
+++ b/src/backend/langflow/main.py
@@ -1,13 +1,9 @@
-import os
-from typing import Optional
 
 from fastapi import FastAPI
-from fastapi.responses import FileResponse
 from fastapi.middleware.cors import CORSMiddleware
 
 from langflow.api import router
 from langflow.database.base import create_db_and_tables
-from pathlib import Path
 
 
 def create_app():