Error message on Tutorial mission

[jchernofsky]

Error while running event level::on_tick (ID 0)
__base__/lualib/compi.lua:97: bad argument #1 to 'pairs' (table expected, got nil)
stack traceback:
[C]: in function 'pairs'
__base__/lualib/compi.lua:97: in function 'stand_next_to'
__base__/lualib/npe/helper-branches.lua:683: in function 'init'
C:/games/Factorio.v0.17.9/data/core/lualib/story_2.lua:231: in function 'jump_to_node'
C:/games/Factorio.v0.17.9/data/core/lualib/story_2.lua:196: in function 'update'
__base__/lualib/npe/helper_story.lua:40: in function '?'
__base__/lualib/event_handler.lua:7: in function <__base__/lualib/event_handler.lua:4>