[API] meta data action is not being called and throwing an missingURL error

[iappa1]

I am using semantic UI API and when I specified the action in meta data it's giving me error: API : No URL specified for api event Basically, I am facing the same issue with a div element. <div class="dashboard-top cards-row js-list-fetch loading" data-action="get all items">

and defined global settings like

$.fn.api.settings.api = {
    "get all items": "/items"
}

and initialising like below don't work

$(".js-list-fetch").api({
        on: "now"
                 .....
});

but the following works

$(".js-list-fetch").api({
        on: "now",
                action: 'get all items'
                 .....
});

and when it don't work, it produces message like API : No URL specified for api event
Please help me resolve this.