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The scenario level caused a non-recoverable error.
Please report this error to the scenario author.

Error while running event level::on_init()
__core__/lualib/story.lua:11: bad argument #1 of 2 to 'pairs' (table expected, got nil)
stack traceback:
[C]: in function 'pairs'
__core__/lualib/story.lua:11: in function 'make_helpers'
__core__/lualib/story.lua:44: in function 'story_init'
...Data/Roaming/Factorio/temp/currently-playing/control.lua:5: in function <...Data/Roaming/Factorio/temp/currently-playing/control.lua:4>

Adding that it happens on level 1, 2 and 3 aswell.

Thanks for the report.

In 0.17, the First Steps campaign was replaced by Introduction campaign (and New Hope campaign was removed). As the campaigns were removed, they were not updated to work in 0.17.
If you have saves from these campaign that you want to continue playing, you need to revert back to 0.16 and finish them there.