grafana/k6 · error

parsing K6_INSTANCE_SCENARIOS: %w

Error message

parsing K6_INSTANCE_SCENARIOS: %w

What it means

Error "parsing K6_INSTANCE_SCENARIOS: %w" thrown in grafana/k6.

Source

Thrown at internal/js/modules/k6/browser/browser/registry.go:136

		return false, nil, nil
	}
	// prevent failing in unquoting empty string.
	if scenariosJSON == "" {
		return false, nil, nil
	}
	scenariosJSON, err := strconv.Unquote(scenariosJSON)
	if err != nil {
		return false, nil, fmt.Errorf("unqouting K6_INSTANCE_SCENARIOS: %w", err)
	}

	var scenarios []struct {
		ID       string `json:"id"`
		Browsers []struct {
			Handle string `json:"handle"`
		} `json:"browsers"`
	}
	if err := json.Unmarshal([]byte(scenariosJSON), &scenarios); err != nil {
		return false, nil, fmt.Errorf("parsing K6_INSTANCE_SCENARIOS: %w", err)
	}

	var wsURLs []string
	for _, s := range scenarios {
		for _, b := range s.Browsers {
			if strings.TrimSpace(b.Handle) == "" {
				continue
			}
			wsURLs = append(wsURLs, b.Handle)
		}
	}
	if len(wsURLs) == 0 {
		return false, wsURLs, nil
	}

	return true, wsURLs, nil
}

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/js/modules/k6/browser/browser/registry.go:136 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/b4fc5bd6e670cb9a. Report an issue: GitHub.