Bard [test mode]: add err handler

src/utils/conversation.py

@@ -65,9 +65,12 @@ def chat_gpt_conversation() -> None:
 
 
 def bard_conversation() -> None:
+    try:
         bard = Chatbot(st.secrets.api_credentials.bard_session)
         ai_content = bard.ask(st.session_state.user_text)
         st.warning(ai_content)
+    except AttributeError as err:
+        st.error(err)
 
 
 def show_conversation() -> None: