grafana/k6 · error

could not create the '%s' output: %w

Error message

could not create the '%s' output: %w

What it means

Error "could not create the '%s' output: %w" thrown in grafana/k6.

Source

Thrown at internal/cmd/outputs.go:171

		}

		// An output is an extension by membership in the output registry, not by
		// its name, so built-in outputs stay out of the "extensions" bucket that
		// the usage report filters against the catalog.
		if e, isExt := ext.Get(ext.OutputExtension)[outputType]; isExt {
			if err := test.preInitState.Usage.Values("extensions", e); err != nil {
				gs.Logger.WithError(err).Warnf("Couldn't report usage for output extension %q", outputType)
			}
		}

		params := baseParams
		params.OutputType = outputType
		params.ConfigArgument = outputArg
		params.JSONConfig = test.derivedConfig.Collectors[outputType]

		out, err := outputConstructor(params)
		if err != nil {
			return nil, fmt.Errorf("could not create the '%s' output: %w", outputType, err)
		}

		if thresholdOut, ok := out.(output.WithThresholds); ok {
			thresholdOut.SetThresholds(test.derivedConfig.Thresholds)
		}

		if builtinMetricOut, ok := out.(output.WithBuiltinMetrics); ok {
			builtinMetricOut.SetBuiltinMetrics(test.preInitState.BuiltinMetrics)
		}

		// If the output is configured to support the archive, and supports it, we proceed
		// with building an archive and setting it on the output instance.
		if !test.derivedConfig.NoArchiveUpload.Bool {
			if archiveOut, ok := out.(output.WithArchive); ok {
				archiveOut.SetArchive(test.makeArchive())
			}
		}

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/cmd/outputs.go:171 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/e240b5b96ca9e4a0. Report an issue: GitHub.