ERROR: Failed to extend syntax

[rfehling-mittwald]

We updated to the newest n8n version v0.212.0, and our already existing workflows are crashing.

ERROR: Failed to extend syntax

Create a code node with just an empty list and use an expression with "?". This will crash, but did not crash in 0.210.

Easiest Example that exists:

Code Node Once Each Item:

return {
  json: {
    test: [],
  }
}

If Node 💥 :
{{$json["test"]?.length >0}}

If this is not a bug, do we have to to manual type checks like?:
{{$json["test"] !== undefined && $json["test"].length >0}}

We may overused the expression function in the past 😅

[Joffcom]

Hey @rfehling-mittwald,

Thanks for reporting this one, We already have this one logged internally and we are tracking it as PAY-105. That example to reproduce is handy as well 🙌🏻

[ivov]

Should be addressed by #5219

[janober]

Fix got released with [email protected]