Update app.py

app.py

@@ -77,7 +77,7 @@ if 'messages' not in st.session_state:
     st.session_state.messages = [{'role': 'assistant', "content": 'Hello I am Pingu! Upload a PDF and ask me anything about its content.'}]
 
 # Define your custom icon
-custom_icon_url = "./custom_icon.png"  # Adjust this to your icon's file path
+custom_icon_url = "./custom_icon.jpeg"  # Adjust this to your icon's file path
 
 # CSS to customize the chatbot icon
 st.markdown(f"""