Swimbot Error

Traceback (most recent call last):
  File "C:\Users\wmiller\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "c:\Users\wmiller\Desktop\Swimbot\whois.py", line 524, in seen
    delta_buildings.append((next((item for item in new_stats['achievements'] if item["name"] == "Nice and Tidy"))+
TypeError: unsupported operand type(s) for +: 'dict' and 'dict'