# `Masu.Source.Error`
[🔗](https://github.com/hattoriai/masu/blob/v0.1.0/lib/masu/source.ex#L167)

A source's read failed: `c:Masu.Source.rows/3` gave `{:error, reason}`.
A grid with `load={:async}` shows it; one that reads inline raises it.

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*Consult [api-reference.md](api-reference.md) for complete listing*