<generate_action_game_object> crash

[jgranda1999]

At the GNS FUNCTION: <generate_action_game_object>, my simulation crashed and got this error:

GNS FUNCTION: <generate_action_game_object>
Traceback (most recent call last):
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/memory_structures/spatial_memory.py", line 105, in get_str_accessible_arena_game_objects
x = ", ".join(list(self.tree[curr_world][curr_sector][curr_arena]))
KeyError: 'main room'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/reverie.py", line 496, in open_server
rs.start_server(int_count)
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/reverie.py", line 390, in start_server
next_tile, pronunciatio, description = persona.move(
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/persona.py", line 222, in move
plan = self.plan(maze, personas, new_day, retrieved)
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/persona.py", line 148, in plan
return plan(self, maze, personas, new_day, retrieved)
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/cognitive_modules/plan.py", line 959, in plan
_determine_action(persona, maze)
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/cognitive_modules/plan.py", line 629, in _determine_action
act_game_object = generate_action_game_object(act_desp, act_address,
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/cognitive_modules/plan.py", line 221, in generate_action_game_object
if not persona.s_mem.get_str_accessible_arena_game_objects(act_address):
File "/home/jgrandaa/Desktop/simulacra/reverie/backend_server/persona/memory_structures/spatial_memory.py", line 107, in get_str_accessible_arena_game_objects
x = ", ".join(list(self.tree[curr_world][curr_sector][curr_arena.lower()]))
KeyError: 'main room'
Error.
Enter option: fin
fin

Anyone know how I could approach solving this?