Update main.py

main.py

@@ -79,7 +79,7 @@ async def webhook(
 chat_sessions = {}
 @line_handler.add(MessageEvent, message=(ImageMessage, TextMessage))
 def handle_image_message(event):
-    # user_id = event.source.user_id
+    user_id = event.source.user_id
     # chat = chat_sessions.get(user_id) or client.chats.create(model="gemini-2.0-flash", config=generation_config)
     # chat_sessions[user_id] = chat
     user_text = event.message.text if event.message.type == "text" else None