Can not get a server response error

I am running my app, but afrer sometimes, every now and then I get the error "Can not get server response, even though the internet is working.

Below is the code to check the internet connection which I have.

if (Titanium.Network.networkType != Titanium.Network.NETWORK_NONE) {
 
        Alloy.Globals.showIndicator(Alloy.Globals.mainWindow);
        var xhr = Titanium.Network.createHTTPClient({
            onload : function(e) {
 
                var entries = JSON.parse(this.responseText).entries;
                if (args.fromLog == "Yes") {
                    Alloy.Globals.db = Ti.Database.open('DB');
                    Alloy.Globals.db.execute("DELETE FROM LogsEntries WHERE logid= '" + location_id + "'");
                    Alloy.Globals.db.execute('INSERT INTO LogsEntries (logentry,logid) VALUES (?,?)', JSON.stringify(entries), location_id);
                    Alloy.Globals.db.close();
                } else {
                    Alloy.Globals.db = Ti.Database.open('DB');
                    Alloy.Globals.db.execute("DELETE FROM LocationsEntries WHERE locationid= '" + location_id + "'");
                    Alloy.Globals.db.execute('INSERT INTO LocationsEntries (locationentry,locationid) VALUES (?,?)', JSON.stringify(entries), location_id);
                    Alloy.Globals.db.close();
                }
 
                getEntriesFromDB(args, location_id);
                Alloy.Globals.hideIndicator();
            },
            onerror : function(e) {
 
                Alloy.Globals.hideIndicator();
                alert("Can not get server response");
            }
        });