fix invoke 2 parameter error

app.py

@@ -68,10 +68,13 @@ def get_response_from_model(prompt):
 
         docs = st.session_state.knowledge_base.similarity_search(prompt)
         print("docs:", docs) # 이까진 됐는데
-        # Chain의 invoke() 메소드 사용
-        response = st.session_state.qa_chain.invoke(input_documents=docs, question=prompt)
+        # Chain의 invoke() 메소드 사용 (input_documents로 전달)
+        response = st.session_state.qa_chain.invoke({
+            "input_documents": docs,
+            "question": prompt
+        })
         print("response:", response)
-        
+
         if "Helpful Answer:" in response:
             response = response.split("Helpful Answer:")[1].strip()