Fix "undefined method downcase for nil:NilClass"

What does this MR do and why?

Resolves this 1 particular aspect mentioned in #382710 (comment 1175936379) & #386561 (comment 1225356418)) while addressing this internal customer case.

@manojmj & @tachyons-gitlab Did I understand your comments correctly, there?

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The patch was confirmed in the above-linked issues.