Can't delete SQLite database using Qt with QML transaction - sqlite

Question

Trying to use localstorage example in Qt 5.14, the database is locked and can't be deleted.
on Qt documentation it's saying:
"Database connections are automatically closed during Javascript garbage collection."
but that is not the case...
function dbInit()
{
var db = LocalStorage.openDatabaseSync("Activity_Tracker_DB", "", "Track exercise", 1000000)
try {
db.transaction(function (tx) {
tx.executeSql('CREATE TABLE IF NOT EXISTS trip_log (date text,trip_desc text,distance numeric)')
})
} catch (err) {
console.log("Error creating table in database: " + err)
};
}
function dbGetHandle()
{
try {
var db = LocalStorage.openDatabaseSync("Activity_Tracker_DB", "",
"Track exercise", 1000000)
} catch (err) {
console.log("Error opening database: " + err)
}
return db
}
function dbInsert(Pdate, Pdesc, Pdistance)
{
var db = dbGetHandle()
var rowid = 0;
db.transaction(function (tx) {
tx.executeSql('INSERT INTO trip_log VALUES(?, ?, ?)',
[Pdate, Pdesc, Pdistance])
var result = tx.executeSql('SELECT last_insert_rowid()')
rowid = result.insertId
})
return rowid;
}
function dbReadAll()
{
var db = dbGetHandle()
db.transaction(function (tx) {var results = tx.executeSql(
'SELECT rowid,date,trip_desc,distance FROM trip_log order by rowid desc')
for (var i = 0; i < results.rows.length; i++) {
listModel.append({
id: results.rows.item(i).rowid,
checked: " ",
date: results.rows.item(i).date,
trip_desc: results.rows.item(i).trip_desc,
distance: results.rows.item(i).distance
})
}
})
}
How can I unlock/close the database?