Update app.py

app.py

@@ -1,16 +1,13 @@
 import os
 import sys
-import logging
-import chromadb
-import gradio as gr
-
-# Fix lỗi SQLite cũ trên Hugging Face
 try:
     __import__("pysqlite3")
     sys.modules["sqlite3"] = sys.modules.pop("pysqlite3")
 except ImportError:
     pass
-
+import logging
+import chromadb
+import gradio as gr
 from langchain_google_genai import ChatGoogleGenerativeAI
 from langchain_chroma import Chroma
 from langchain_huggingface import HuggingFaceEmbeddings
@@ -73,7 +70,7 @@ class DeepMedBot:
         self.ready = False
         try:
             self.fast_retriever, self.deep_retriever = get_retrievers()
-            self.llm = ChatGoogleGenerativeAI(model="gemini-22.5-flash", temperature=0.2, google_api_key=GOOGLE_API_KEY)
+            self.llm = ChatGoogleGenerativeAI(model="gemini-2.5-flash", temperature=0.2, google_api_key=GOOGLE_API_KEY)
             self._build_chains()
             self.ready = True
         except Exception as e: