userInfoHelper.deleteUserCodeFromCookie(request);
                return getHtmlResponse();
            });
            if (ComponentUtil.getFessConfig().isValidAdminPassword(password)) {
                return loginRedirect;
            }
            getSession().ifPresent(session -> session.setAttribute(INVALID_OLD_PASSWORD, password));

        }

        if (fessConfig.isPasswordRequireSpecialChar() && !containsSpecialChar(password)) {
            return "errors.password_no_special_char";
        }

        if (!fessConfig.isValidAdminPassword(password)) {
            return "errors.password_is_blacklisted";
        }

        return StringUtil.EMPTY;
    }

    /**