Add-on review list throws TypeError: Cannot read property 'slug' of undefined

[kumar303]

To reproduce:

• Go to an add-on detail page
• Tap on 'read all N reviews'
• You should be on a URL similar to http://localhost:3000/en-US/android/addon/dragons-of-fire/reviews/
• Reload the browser page

Because there is an initialization problem with the AddonReviewList component, you will see this error:

Uncaught (in promise) TypeError: Cannot read property 'slug' of undefined
    at AddonReviewListBase.addonURL (amo-c1a32f32392627cd059b.js:70019)
    at AddonReviewListBase.proxiedMethod (amo-c1a32f32392627cd059b.js:57285)
    at AddonReviewListBase.render (amo-c1a32f32392627cd059b.js:70084)
    at AddonReviewListBase.proxiedMethod (amo-c1a32f32392627cd059b.js:57285)
    at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (amo-c1a32f32392627cd059b.js:24646)
    at ReactCompositeComponentWrapper._renderValidatedComponent (amo-c1a32f32392627cd059b.js:24669)
    at ReactCompositeComponentWrapper.performInitialMount (amo-c1a32f32392627cd059b.js:24209)
    at ReactCompositeComponentWrapper.mountComponent (amo-c1a32f32392627cd059b.js:24105)
    at Object.mountComponent (amo-c1a32f32392627cd059b.js:17207)
    at ReactCompositeComponentWrapper.performInitialMount (amo-c1a32f32392627cd059b.js:24218)

[kumar303]

This is a development issue only. It happened because I had disableSSR: true in my config. When reloading, what this does is render everything on the client side. For this specific component, the initial data loader waits on two promises. At the end of each promise, it dispatches a Redux action. On the client, this causes an immediate re-render but on the server the component is only rendered when both promises are complete.

So, yeah, it's probably something we should think about soon because it's stupid and annoying. However, I'm going to close it for now since there are more important things to worry about.