welcome message not pushed on bot

app.py

@@ -139,12 +139,6 @@ def predict(message, history, request: gr.Request):
         return "This app can only answer question about Rémi Cazelles's projects, work and education."
     print("passed the safeguard")
 
-    WELCOME_TEXT = "This bot allows you finding informations related to Rémi Cazelles's projects, work and education"
-    if not history:                    
-        # Gradio expects a list of dicts with keys "role" and "content"
-        history = [
-            {"role": "assistant", "content": WELCOME_TEXT}
-        ]
 
     # Build conversation history
     history_langchain_format = []
@@ -227,6 +221,7 @@ os.environ["LANGSMITH_API_KEY"] = os.environ['LANGSMITH_API_KEY']
 import gradio as gr
 iface = gr.ChatInterface(
     predict,
+    chatbot=gr.Chatbot(value=[[None, "This bot allows you finding informations related to Rémi Cazelles's projects, work and education"]]),
     api_name="chat",
 )
 print("Launch ...")