# `Accrue.ConfigError`
[🔗](https://github.com/szTheory/accrue/blob/accrue-v0.3.0/lib/accrue/errors.ex#L112)

Raised when `Accrue.Config` validation fails, or when a key is looked up
that is neither set at runtime nor has a schema default.

# `t`

```elixir
@type t() :: %Accrue.ConfigError{
  __exception__: true,
  diagnostic: term(),
  key: term(),
  message: term()
}
```

---

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