Update app.py

app.py

@@ -13,7 +13,7 @@ def call_chatgpt_api(message, dialog_messages):
         "message": message,
         "version": 3,
         "chat_mode": "assistant",
-        "dialog_messages": json.dumps(dialog_messages)
+        "dialog_messages": dialog_messages
     }
 
     response = requests.post(url, headers=headers, data=json.dumps(payload))
@@ -24,7 +24,7 @@ def call_chatgpt_api(message, dialog_messages):
 
 # Initialize session state if not already done
 if 'dialog_messages' not in st.session_state:
-    st.session_state.dialog_messages = []
+    st.session_state.dialog_messages = [{"bot": "", "user": ""}]
 
 if 'responses' not in st.session_state:
     st.session_state.responses = []