Hi all! When trying to play around with subscriptions in the Playground (Prisma1), I only ever get an error saying "The provided query doesn't include any known model name. Please check for the latest subscriptions API." I can't seem to find any bugs or other posts about this error that aren't related to server side subscription deployments. I feel like I'm missing a vital step in my setup on the server side as the subscription syntax is quite simple. Are there any "gotchas" to the server side setup when doing subscriptions? All the docs I've read seem to indicate it should work out-of-the-box.