// Generate error response.
	errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path, w.Header().Get(xhttp.AmzRequestID), w.Header().Get(xhttp.AmzRequestHostID))
	encodedErrorResponse := encodeResponseJSON(errorResponse)
	writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeJSON)
}

// writeCustomErrorResponseJSON - similar to writeErrorResponseJSON,