Update app.py

app.py

@@ -30,7 +30,8 @@ def generate_question(role, topic, difficulty_level):
     )
     # llm_chain = prompt | llm
     prompt = PromptTemplate.from_template(prompt)
-    response = llm.invoke(prompt)
+    llm_chain = prompt | llm
+    response = llm_chain.invoke(prompt)
     response = response.content
  
     return response