```
I'm sorry, but an uncaught exception occurred.
While running game code:
File "renpy/common/000statements.rpy", line 531, in execute_call_screen
TypeError: 'NoneType' object is not subscriptable
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "script.rpyc", line 7, in script call
File "engine/core.rpyc", line 25, in script call
File "game/roaming.rpyc", line 6, in script
File "C:\Git\RenPySDK\renpy\ast.py", line 1949, in execute
File "C:\Git\RenPySDK\renpy\ast.py", line 1937, in call
File "C:\Git\RenPySDK\renpy\statements.py", line 277, in call
File "renpy/common/000statements.rpy", line 531, in execute_call_screen
File "C:\Git\RenPySDK\renpy\exports.py", line 2905, in call_screen
File "C:\Git\RenPySDK\renpy\ui.py", line 297, in interact
File "renpy/display/core.py", line 2702, in interact
File "renpy/display/core.py", line 3512, in interact_core
File "renpy/display/gesture.py", line 129, in event
TypeError: 'NoneType' object is not subscriptable
```