Uncaught TypeError: Cannot read property 'metadataLoaded' of undefined

I'm developing my first UI5 app using the Worklist template and attempting to deploy it but I'm getting a error when running it from the Fiori Launchpad. However, it works fine from the WebIDE.

When clicking the tile, it's launching the app but I'm getting a blank page.

Pressing F12 in Chrome shows me the following error:

"Uncaught TypeError: Cannot read property 'metadataLoaded' of undefined"

I've google'd this message but nothing conclusive comes up.

Any ideas?