Cannot convert undefined or null to object

[mcorning]

Subject is a common error when you forget to wrap your payload in a data:{} object.

looks like you might need to fix the sample
Todo.$create({
title: this.todo
})
to read:
Todo.$create({
data:{title: this.todo }
})
yeah?

[Colorfulstan]

I'm also running into this issue when using .$get(id) when there is no item with that key stored in indexedDB.
This is a pretty strange error, I was expecting it returns null or something if there is no stored item, but it seems to break.