Explored Qt sources i found source of localstorage plugin where was this part

QString basename = args->v4engine()->qmlEngine()->offlineStorageDatabaseFilePath(dbname);
QFileInfo dbFile(basename);
if (!QDir().mkpath(dbFile.dir().absolutePath())) {
const QString message = QQmlEngine::tr("LocalStorage: can't create path %1").arg(QDir::toNativeSeparators(dbFile.dir().absolutePath()));
V4THROW_SQL2(SQLEXCEPTION_DATABASE_ERR, message);
}
QString dbid = dbFile.fileName();
bool created = false;
QString version = dbversion;
QSqlDatabase database;

So I think there is some problem to open/create database file on default path for qt projects by qmlscene. I cant change default path and cant set offlineStorage(path) becouse i have not access to C++ code (its .qmlproject). When I run project (not using menu item "QML Preview") or build it with C++ qmlengine loader its working normal with localstorage, but when i try to preview via QML scene tool from Qt Design Studio its show error.

Have somebody ideas how fix it or other way to use localstorage in QMLscene tool ?