Update app.py

app.py

@@ -63,11 +63,9 @@ def navigate(screenshot, task: str, platform: str, history):
             "## Action Space\nclick(start_box='...') / type(...)\n\n"
             f"### Task\n{task}"
         )
-        user_history = [{"role":"user","content":[{"type":"text","text":prompt_header},{"type": "image_url", "image_url":screenshot}]}
+        user_history = [{"role":"user","content":[{"type":"text","text":prompt_header},{"type": "image_url", "image_url":screenshot}]
         messages = user_history
 
-        
-
     # ─────────────────────────── model forward ─────────────────────────────
     text = processor.apply_chat_template(
         messages, tokenize=False, add_generation_prompt=True