Subscription error with the latest version of prisma-binding package

[mrkvon]

When I upgrade prisma-binding from ^2.0.2 to ^2.1.4

newLink (and newVote) subscriptions fail with

{
  "error": {
    "name": "TypeError",
    "message": "Cannot read property 'link' of undefined"
  }
}

This error happens when I follow the tutorial today. It is not an issue with the repository itself, but with the related tutorial which seems to not reflect some recent breaking changes between minor versions of prisma-binding

reproduce

1. install this repository, yarn dev, go to playground, sign up, provide authorization header
2. test that newLink subscription works

3. yarn add graphql-yoga@latest
   yarn add prisma-binding@latest

4. restart with yarn dev
5. test newLink subscription again and observe the error

[mrkvon]

Related: prisma-labs/prisma-binding#229
Related: howtographql/howtographql#758

[mrimran]

I was getting the same issue and by closely analyzing I came to know that I'm making a typo here

return context.db.subscription.link, the typo was subscribtion :) The issue no more comes on my end.

[mrkvon]

With prisma-binding^2.1.6 everything works as expected again. Either upgrading the package or generating binding code again may have helped.
Closing.