Update app.py

app.py

@@ -84,7 +84,7 @@ with gr.Blocks() as demo:
                                  avatar_images=(os.path.join(os.getcwd(), 'user.png'), os.path.join(os.getcwd(), 'ai.png')))
             chat_input = gr.MultimodalTextbox(interactive=True, placeholder="Enter message or upload file...", show_label=False)
 
-    hat_msg = chat_input.submit(add_message, [chatbot, chat_input], [chatbot, chat_input])
+    chat_msg = chat_input.submit(add_message, [chatbot, chat_input], [chatbot, chat_input])
     bot_msg = chat_msg.then(bot, chatbot, chatbot, api_name="bot_response")
     bot_msg.then(lambda: gr.MultimodalTextbox(interactive=True), None, [chat_input])