I have a simple Lightning Component with a Canvas App embedded in it via the force:canvasApp tag.
CanvasTestComponent.cmp
<aura:component implements="forceCommunity:availableForAllPageTypes" access="global" >
<div class="canvas-container">
<force:canvasApp developerName="canvasTutorial" namespacePrefix="canvasNameSpace"/>
</div>
</aura:component>
This works perfectly, when I include this in a Lightning App like so:
CanvasTestApp.app
<aura:application >
<c:CanvasTestComponent />
</aura:application>
However, when I try to drag the component into a section of the Community Builder, it does not work. Nothing actually happens. Upon opening the console, I get this error:
Failed to load resource: https://some_example_org--livepreview.na3.force.com/sfsites/c/sfsites/c/jslibrary/1471293714000/ui-sfdc-javascript-impl/SfdcCoreLean.js the server responded with a status of 404 (Not Found).
Anyone know if I'm missing something? I found this question here, but seems like no one has answered it and it seems pretty recent with Winter 17.