```
I'm sorry, but an uncaught exception occurred.
While running game code:
File "game/script/room_func/settings.rpy", line 6, in <module>
TypeError: 'NoneType' object is not iterable
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "script/game_loop.rpyc", line 40, in script call
File "script/room_func/settings.rpyc", line 3, in script call
File "script/game_loop.rpyc", line 40, in script call
File "script/room_func/settings.rpyc", line 5, in script
File "renpy/ast.py", line 928, in execute
File "renpy/python.py", line 2245, in py_exec_bytecode
File "game/script/room_func/settings.rpy", line 6, in <module>
TypeError: 'NoneType' object is not iterable
```