[BUG] getServerSideProps can't be used in Production

[nathanbrachotte]

Describe the bug
Hey there, thanks a lot for this boilerplate. It looks great.
One issue is that I've not been able to use getServerSideProps when deploying on Vercel.

To Reproduce
Steps to reproduce the behavior:

1. Start new project
2. Deploy to Vercel

Expected behavior
You'd expect to see the Home screen. Instead, you see a 500 error.
Removing the getServerSideProps in pages/index.tsx (and follow instructions here will fix the issue.
But adding getServerSideProps anywhere else in the app will brake the project the same way. This is not reproducible locally.

[chen-rn]

I'm not too sure why getServerSideProps is breaking it in this case, if someone can make it work I'd love a PR! But for now I've reverted the PR that causes the issue!