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it keeps saying an exception has occurred on every transition

[code]

I'm sorry, but an uncaught exception occurred.

While running game code:

  File "game/mods/generation_npc.rpy", line 384, in <module>

  File "game/system/activity_RNPCs_new.rpy", line 23, in Detect_Activity_RNPCs

AttributeError: 'RevertableList' object has no attribute 'items'

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

Full traceback:

  File "mods/generation_npc.rpyc", line 382, in script

  File "C:\Users\Name\Downloads\School-0.970-win\renpy\ast.py", line 823, in execute

    renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)

  File "C:\Users\Name\Downloads\School-0.970-win\renpy\python.py", line 1179, in py_exec_bytecode

    exec(bytecode, globals, locals)

  File "game/mods/generation_npc.rpy", line 384, in <module>

  File "game/system/activity_RNPCs_new.rpy", line 23, in Detect_Activity_RNPCs

AttributeError: 'RevertableList' object has no attribute 'items'

Windows-10-10.0.26100 AMD64

Ren'Py 8.2.1.24030407

School 0.970

Fri Oct 31 13:10:41 2025

[/code]

That's right, every transition always has that, the NPC's skin color changes by itself, sometimes it's brown, sometimes it's white.