when I see this in resolver log, is it error in my function or graphcool issue?

TypeError: Cannot read property 'id' of undefined\n    at /data/io/731b9e16cb2847c4b1234823aa1a0588/webtask.js:86:44\n    at process._tickDomainCallback (node.js:481:9)

It’s an issue in your function code

yea I figured it out, but it's not very helpful lacking line number 🙂 I checked, the

webtask.js:86:44

does not refer to line where issue was