Title: N8N103 Section 1 — n8n103/feedback endpoint returns HTTP 200 with an empty body, blocking the Feedback Pipeline exercise

n8n Academy N8N103: In Practice: AI, Testing, Best Practices
, , , ,
1

Hi team,

I’m blocked on the N8N103 Section 1 – Feedback Pipeline exercise by what looks like a server-side issue on the Academy training endpoint, not my workflow. Posting full evidence so it’s reproducible.

The problem

GET https://learn.app.n8n.cloud/webhook/course/n8n103/feedback returns HTTP 200 OK with a zero-byte body — so no feedback data comes back and the pipeline can’t complete.

What I’ve ruled out (so this isn’t on my end):

  • Auth is working: with a wrong/missing key the endpoint returns 403 "Authorization data is wrong!". With my valid X-Assessment-ID it returns 200 — but with Content-Length: 0.
  • Reproduces outside n8n: plain curl gives the same result, so it isn’t node configuration.
  • Correct verb: GET is what the endpoint expects.

curl reproduction:

curl -s -D - -H "X-Assessment-ID: <my-assessment-id>" \
  https://learn.app.n8n.cloud/webhook/course/n8n103/feedback

→ HTTP/2 200
→ content-type: application/json; charset=utf-8
→ content-length: 0
   (empty body)

Last node output: one item, empty object — [ {} ]

Downstream effect: because feedback_id, customer_name, and message all resolve to nothing from the empty response, the generated reply POST to .../n8n103/reply correctly fails with 422 [Validation Failed].

Details:

  • Course/section: N8N103 – Section 1 (Feedback Pipeline)
  • Endpoint: https://learn.app.n8n.cloud/webhook/course/n8n103/feedback
  • Assessment ID:
  • Tested: 2026-08-15, ~22:08 SGT (UTC+8)

Request: Could someone from the Academy team check whether the mock data source behind n8n103/feedback is down and restore it? This looks like the same class of issue reported here:

Happy to provide execution timestamps or run any diagnostics. Thanks!

2

Hello,

Our backend instance decided to take a day off. Resulting in a bunch of our workflows breaking. We’re back up now, please try again.

cheers

3

Hello, same error today.

No fields - item(s) exist, but they’re empty

in all N8N103 hands on exercices

4

Hello,

We had some backend issues again. I will be working on figuring out why this is recurring and hopefully resolve it today.

cheers,