Update app.py

app.py

@@ -16,4 +16,4 @@ env = os.environ.copy()
 env["PYTHONPATH"] = f"{browsergym_path}:{env.get('PYTHONPATH', '')}"
 
 # 🔁 Now run app.py in a clean subprocess with correct PYTHONPATH
-subprocess.run([sys.executable, "app.py"], env=env)
+subprocess.run([sys.executable, "app_.py"], env=env)