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Editorial Team
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Asked: 2026-06-17T08:30:51+00:00

When you see an error like uninitialized constant User::Nil what does that mean? I

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When you see an error like “uninitialized constant User::Nil” what does that mean?

I think it has something to do with my Authorization model connecting with a User model… I’m setting up sign in through FB.

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1 Answer

  1. Editorial Team

    It sounds like you have mistakenly capitalized nil somewhere.

    class Foo
  def bar
    Nil
  end
end

Foo.new.bar
# => NameError: uninitialized constant Foo::Nil
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