Crossword Genius

Singular errata? (5)

Ross

I believe the answer is:

error

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'singular' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for error that I've seen before include "Miscalculation" , "Faulty judgment" , "Mistake, lapse" , "Faulty judgement" , "Faux pas" .)

I've seen this clue in the Evening Standard.
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