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    This comment is hidden because it contains spoiler information about the solution

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    Is there an issue with the Ruby version? I'm getting this error on Submit, I'm sure it is part of the test that I'm failing, but it happens even when the entire function is commented out.

    #<NoMethodError: undefined method `[]' for nil:NilClass>
`block in n' `each' `n' `block (3 levels) in
' `block (2 levels) in
' `each'