---
title: "EvaluationError.metricsNotFound(names:)"
framework: evaluations
role: symbol
role_heading: Case
path: "evaluations/evaluationerror/metricsnotfound(names:)"
---

# EvaluationError.metricsNotFound(names:)

One or more metric columns were not found in the evaluation results.

## Declaration

```swift
case metricsNotFound(names: [String])
```

## Discussion

Discussion This occurs when MetricsAggregator references metrics that no evaluator produced during the run.