Game Crash - ATJ

```
I'm sorry, but an uncaught exception occurred.

While running game code:
  File "game/free_events_handler.rpy", line 575, in <module>
TypeError: 'RevertableSet' object does not support item assignment

-- Full Traceback ------------------------------------------------------------

Full traceback:
  File "script.rpyc", line 109, in script call
  File "calendar_handler.rpyc", line 98, in script call
  File "work_days.rpyc", line 6, in script call
  File "work_days.rpyc", line 113, in script call
  File "free_events_handler.rpyc", line 144, in script call
  File "free_events_handler.rpyc", line 392, in script call
  File "free_events_handler.rpyc", line 451, in script call
  File "free_events_handler.rpyc", line 532, in script call
  File "free_events_handler.rpyc", line 577, in script call
  File "free_events_handler.rpyc", line 552, in script call
  File "free_events_handler.rpyc", line 457, in script call
  File "free_events_handler.rpyc", line 135, in script call
  File "free_events_handler.rpyc", line 350, in script call
  File "free_events_handler.rpyc", line 451, in script call
  File "free_events_handler.rpyc", line 532, in script call
  File "free_events_handler.rpyc", line 577, in script call
  File "free_events_handler.rpyc", line 552, in script call
  File "free_events_handler.rpyc", line 457, in script call
  File "free_events_handler.rpyc", line 141, in script call
  File "free_events_handler.rpyc", line 371, in script call
  File "free_events_handler.rpyc", line 451, in script call
  File "free_events_handler.rpyc", line 532, in script call
  File "free_events_handler.rpyc", line 575, in script
  File "C:\Users\mf1fa\Downloads\full-service-windows\FullService-RC1.1-pc\renpy\ast.py", line 914, in execute
    renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
  File "C:\Users\mf1fa\Downloads\full-service-windows\FullService-RC1.1-pc\renpy\python.py", line 2028, in py_exec_bytecode
    exec bytecode in globals, locals
  File "game/free_events_handler.rpy", line 575, in <module>
TypeError: 'RevertableSet' object does not support item assignment

Windows-8-6.2.9200
Ren'Py 7.3.5.606
Full Service RC1.1
Fri Feb 21 01:03:34 2020
```