} catch (final Exception e) {
                logger.warn("Failed to upgrade data.", e);
                saveError(messages -> messages.addErrorsFailedToUpgradeFrom(GLOBAL, VERSION_14_16, e.getLocalizedMessage()));
            }
        } else {
            saveError(messages -> messages.addErrorsUnknownVersionForUpgrade(GLOBAL));
        }
        return redirect(getClass());
    }