Demonstrates a bug where an error is thrown at the top level of a page on the client side. _error.js is rendered, but does not have getInitialProps invoked, so information about the error is not availible to it as it normally would. To reproduce:

1. Clone this project and yarn install, yarn build, yarn start (custom _error.js is only used in a production build, so yarn dev won't work)
2. Open localhost:3000 and check the browser console

ACTUAL: Just the error is logged to the console EXPECTED: We should see the error then the log from _error.js's getInitialProps: "This will not log, because it was not run"