const html/template.ErrOutputContext

2 uses

	html/template (current package)
		error.go#L139: 	ErrOutputContext
		escape.go#L677: 			err:   errorf(ErrOutputContext, t.Tree.Root, 0, "cannot compute output context for template %s", t.Name()),

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)