SQLite loaddata problem

Ionic Framework ionic-v3
1

I created a project in Ionic Creator and downloaded it local to implement offline capabilities with SQLite.

ERROR: TypeError: Cannot read property ‘openDatabase’ of undefined on the line with window.sqlitePlugin.openDatabase in the controller.

In my controller:

angular.module(‘app.controllers’, [‘ionic’])

.controller(‘berichtenCtrl’, [’$scope’, ‘$stateParams’,’$ionicPlatform’, ‘Message’,‘messageService’,’$cordovaSQLite’,’$ionicHistory’,
function ($scope,$stateParams,$ionicPlatform, Message, messageService,$cordovaSQLite,$ionicHistory) {
console.log(‘in controller’);
$scope.$on("$ionicView.enter", function () {
$ionicHistory.clearCache();
$ionicHistory.clearHistory();
});
$scope.messages = [];

console.log('loaddata start');
db = window.sqlitePlugin.openDatabase({name: "test.db",  location:'default'});

var query=" SELECT * FROM messages" ;
db.executeSql(query ,[],function(result) {
    if(result.rows.length >0){

        for(var i=0; i<result.rows.length; i++){
            $scope.messages.push(result.rows.item(i));
            console.log('XXX mess:'+result.rows.item(i).id);
        } 
    }
    else{
        console.log("XXX####console######## NO results found #######"+"Table record #: ");
    }
}, function(tx, error) {
    console.log("ERROR ");

});         
    

$scope.showDelete = false;
$scope.toggleDelete = function(){
    $scope.showDelete = !$scope.showDelete;
}

$scope.deleteItem = function($index){
    Message.delete($scope.messages[$index].id).then(function(){
        $scope.messages.splice($index-1, 1);
    })
}

}])

IN services.js:

.run(function($ionicPlatform,$cordovaSQLite,$http,$interval){
console.log(‘RUN STARTED’);

        console.log('RUN: before ready');

$ionicPlatform.ready(function () {
    console.log('RUN: ready');
    //get and store users
    db = window.sqlitePlugin.openDatabase({name: "test.db",  location:'default'});
    
    var api_url = 'https://testsite.ie/mobile/getUsers/5a1c472e489de0.87865504';
    db.executeSql('DROP table users');
    db.executeSql('CREATE TABLE IF NOT EXISTS users (id, fname, nr,picture,type,userfunction,userids,users)');        

    return $http.get(api_url).then(function(resp){
        console.log(resp);
        try{
            console.log('setUsers: in try');

            db.transaction(function(tx) {
                console.log('setUsers: in transaction ');

                angular.forEach(resp.data.data.allusers, function(val) {
                    console.log('setUsers: foreach');
                    tx.executeSql("INSERT into users (id, fname, nr,picture,type,userfunction,userids,users)"+
                     " VALUES (?,?,?,?,?,?,?,?)",
                    [val.id,val.fname ,val.nr,val.picture,val.type,val.userfunction ,val.userids ,val.users
                    ],null,errorHandler);
                });
            });
        }
        finally{
            console.log('FINALLY');
        }               
        console.log('END HTTP.GET');
    });

});

})

Thanks in advance for your help!