Update app.py

app.py

@@ -58,10 +58,11 @@ def initialize_index():
 
 def initialize_chat_engine(index):
     retriever = index.as_retriever(similarity_top_k=3)
-    return CondensePlusContextChatEngine.from_defaults(
+    chat_engine = CondensePlusContextChatEngine.from_defaults(
         retriever=retriever,
-        verbose=False  # Matikan verbose agar output lebih bersih
+        verbose=False,
     )
+    return chat_engine
 
 def generate_response(message, history, chat_engine):
     if history is None: