I get this with the latest modded version right when i want to give lily the 10 serums with mood enhancer and distilled aphrodisiac(also tried a serum with only distilled aphrodisiac with same result) but i feel like this bug has been present for a while but no idea if and what kind of fix/workaround there is for this. Anyone know of a workaround for this?
```
I'm sorry, but an uncaught exception occurred.
While running game code:
  File "renpy/common/000statements.rpy", line 609, in execute_call_screen
    store._return = renpy.call_screen(name, *args, **kwargs)
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 2, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 2, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 4, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 11, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 17, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 18, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 18, in keywords
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 30, in <module>
TypeError: 'NoneType' object is not callable
-- Full Traceback ------------------------------------------------------------
Full traceback:
  File "script.rpyc", line 365, in script call
  File "script.rpyc", line 362, in script call
  File "script.rpyc", line 470, in script call
  File "game_roles/role_sister/role_sister_taboo_quests.rpyc", line 727, in script
  File "renpy/ast.py", line 2232, in execute
    self.call("execute")
  File "renpy/ast.py", line 2220, in call
    return renpy.statements.call(method, parsed, *args, **kwargs)
  File "renpy/statements.py", line 281, in call
    return method(parsed, *args, **kwargs)
  File "renpy/common/000statements.rpy", line 609, in execute_call_screen
    store._return = renpy.call_screen(name, *args, **kwargs)
  File "renpy/exports.py", line 3181, in call_screen
    rv = renpy.ui.interact(mouse="screen", type="screen", roll_forward=roll_forward)
  File "renpy/ui.py", line 299, in interact
    rv = renpy.game.interface.interact(roll_forward=roll_forward, **kwargs)
  File "renpy/display/core.py", line 3377, in interact
    repeat, rv = self.interact_core(preloads=preloads, trans_pause=trans_pause, pause=pause, pause_start=pause_start, pause_modal=pause_modal, **kwargs) # type: ignore
  File "renpy/display/core.py", line 3810, in interact_core
    root_widget.visit_all(lambda i : i.per_interact())
  File "renpy/display/core.py", line 582, in visit_all
    d.visit_all(callback, seen)
  File "renpy/display/core.py", line 582, in visit_all
    d.visit_all(callback, seen)
  File "renpy/display/core.py", line 582, in visit_all
    d.visit_all(callback, seen)
  File "renpy/display/screen.py", line 451, in visit_all
    callback(self)
  File "renpy/display/core.py", line 3810, in <lambda>
    root_widget.visit_all(lambda i : i.per_interact())
  File "renpy/display/screen.py", line 462, in per_interact
    self.update()
  File "renpy/display/screen.py", line 653, in update
    self.screen.function(**self.scope)
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 2, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 2, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 4, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 11, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 17, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 18, in execute
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 18, in keywords
  File "game/Mods/Screens/Serum_Screens/enhanced_serum_inventory_select_ui.rpy", line 30, in <module>
TypeError: 'NoneType' object is not callable
Windows-10-10.0.19041 AMD64
Ren'Py 7.5.3.22090809
Lab Rats 2 - Down to Business 0.51.3.1
Wed Apr  5 23:55:08 2023
```