Update app.py

app.py

@@ -67,7 +67,7 @@ def load_pdf(file_path):
     return VectorStore
 
 def load_chatbot():
-    return load_qa_chain(llm=OpenAI(temperature=0.1, max_tokens=50), chain_type="stuff") 
+    return load_qa_chain(llm=OpenAI(temperature=0.1, max_tokens=120), chain_type="stuff") 
 
 
 def display_chat_history(chat_history):