I am trying to get model records in a dropdown list of Systray Icon.

I am getting a "No enumerator given to foreach" error on button click.

I could see the data on the console as a list of names.

This is my XML file.

<t t-name="test.module.systray.UserMenu.Previews">
    <t 
    <t t-set="previews" t-value="widget.previews"/>
    <t 
    <t t-if="_.isEmpty(previews)">
        <li 
        <li class="text-center o_no_activity mt16">
            <span>
            <span>No records yet...</span>
        </li>
    </t>
    <t 
        </li>
    </t>
    <t t-foreach="previews" t-as="preview">
        <t 
        <t t-esc="preview"/>
    </t>
</t>
    </t>
</t>

This is my js file

odoo.define('test_module.systray_cloud', function(require) {
"use strict";
var SystrayMenu = require('web.SystrayMenu');
var session = require('web.session');
var Widget = require('web.Widget');
var core = require('web.core');
var QWeb = core.qweb;
var ActionMenu = Widget.extend({
     template: 'systray_test.myicon',
     events: {
'click .my_icon': '_onActivityMenuShow',
'click .o_mail_activity_action': '_onActivityActionClick',
     },
     start: function () {
this._$activitiesPreview = this.$('o_test_module_systray_dropdown_items');
this._$previews = this.$('.o_test_module_systray_dropdown_items');
     },
     _getActivityData: function () {
var self = this;
return self._rpc({
            model: 'test.module',
            method: 'systray_get_records',
            args: [],
            kwargs: {context: session.user_context},
        }).then(function (data) {
            self.previews = data;
        });
    },
    _updateActivityPreview: function () {
var self = this;
        self._getActivityData().then(function (){
            console.log('In the previews');
            self._$activitiesPreview.html(QWeb.render('test.module.systray.UserMenu.Previews', {
                widget: self,
            }));
        });
    },
    _onActivityMenuShow: function () {
        document.body.classList.add('modal-open');
this._updateActivityPreview();
    },
   });
   SystrayMenu.Items.push(ActionMenu);
return ActionMenu;
});