Update app.py

app.py

@@ -71,7 +71,7 @@ chat_history = []  # initialize chat history
 def greet(question, pdf_file):
     global chat_history
     print("chat_history: ", chat_history)
-    a = load_db(pdf_file, 3)
+    a = load_db(pdf_file, 5)
     r = a.invoke({"question": question, "chat_history": chat_history})
     match = re.search(r'Helpful Answer:(.*)', r['answer'])
     if match: