Update app.py

app.py

@@ -103,7 +103,7 @@ with gr.Blocks() as demo:
         chat_data = []
         for user_msg, assistant_msg in history:
             chat_data += [
-                {"role": "user", user_msg},
+                {"role": "user", "content": user_msg},
                 {"role": "assistant", "content": assistant_msg},
             ]
         message = tokenizer.apply_chat_template(chat, tokenize=False)