KeyError: 'savewarp_fallback'

[fenhl]

Got a report of this on 7.1.118 Fenhl-19:

'savewarp_fallback'
Traceback (most recent call last):
  File "OoTRandomizer.py", line 64, in start
    main(settings)
  File "Main.py", line 57, in main
    spoiler = generate(world_settings, window=window)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "Main.py", line 123, in generate
    worlds = build_world_graphs(world_settings, window=window)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "Main.py", line 180, in build_world_graphs
    set_entrances(worlds, savewarps_to_connect)
  File "EntranceShuffle.py", line 440, in set_entrances
    shuffle_random_entrances(worlds)
  File "EntranceShuffle.py", line 784, in shuffle_random_entrances
    savewarp_region = world.get_region(savewarp_target.data['savewarp_fallback'].split(' -> ')[1])
                                       ~~~~^^^^^^^^^^^^^^^^^^^^^
KeyError: 'savewarp_fallback'

Workaround

Disable boss ER.