Update app.py

app.py

@@ -44,7 +44,7 @@ if user_input:
     message_placeholder = st.empty()  # 応答の一時表示用の空要素
     for chunk in response:
         if "choices" in chunk:
-            chunk_text = chunk['choices'][0]['delta']['content']
+            chunk_text = chunk['choices'][0]['delta'].get('content', '')
             response_text += chunk_text
             message_placeholder.text(response_text)  # 部分的な応答を表示
     
@@ -57,4 +57,4 @@ if user_input:
 # 会話履歴をリセットするボタン
 if st.button("会話をリセット"):
     st.session_state['conversation_history'] = []
-    st.experimental_set_query_params()
+    st.query_params = {}