I'm trying to get the popover example from the Salesforce documentation working and it's giving me an interupt error with "Cannot read property 'na' of undefined" message.

All I have done is copy from: https://developer.salesforce.com/docs/component-library/bundle/lightning:overlayLibrary/documentation

Have I missed something obvious? Thanksenter image description here


    <aura:application description="PopoverApp" extends="force:slds" access="GLOBAL" implements="ltng:allowGuestAccess">
    <c:PopoverCmp />


<aura:component description="PopoverCmp">
    <lightning:overlayLibrary aura:id="overlayLib"/>
    <lightning:button name="popover" label="Show Popover" onclick="{!c.handleShowPopover}"/>
    <div class="mypopover" onmouseover="{!c.handleShowPopover}">Popover should display if you hover over here.</div>


handleShowPopover : function(component, event, helper) {
        body: "Popovers are positioned relative to a reference element",
        referenceSelector: ".mypopover",
        cssClass: "popoverclass, cMyCmp"
    }).then(function (overlay) {
            //close the popover after 3 seconds
        }, 3000);


    .THIS.popoverclass {
    min-height: 100px;

.THIS.no-pointer .pointer{
    visibility: hidden;
  • How are you calling the component, in aura:application or using component in record page with app builder? – Raul Nov 21 '18 at 17:47
  • Hi Raul, I'm just using a basic app. I can add it to the description ..one second – Jay Nov 21 '18 at 17:49
  • Last time I checked lightning:overlayLibrary was not supported in aura:application – Raul Nov 21 '18 at 17:51
  • Hmm ok thanks. Let me try another way.. thanks for your input – Jay Nov 21 '18 at 18:22
  • Hi Raul, it works when I use it with lightning app builder so I think you're right. Feel free to add it as an answer and I can mark it as correct – Jay Nov 22 '18 at 15:29

lightning:overlayLibrary does not work in aura:application.

Use component inside any component in app builder, where it works.

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