Something went wrong before I could finish that response

Questions
1

Title: AI Assistant (Preview) failing on every message since July 31 — “Something went wrong before I could finish that response”
Instance: vsg2026.app.n8n.cloud
Account: chavis@vietsongroup.com
The AI Assistant fails immediately on every message, on new threads, with both long and short prompts, since July 31 and still happening today (Aug 1). Retrying does not help. Billing is current and active.
This matches other reports of the same error — one traced it to the instance-ai/credits endpoint returning a 500. Is this a known ongoing issue?
[paste debug info here]

Describe the problem/error/question

What is the error message (if any)?

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
2

Hey @VIETSON_GROUP, while you wait for a response, here are some things that might help:

Suggested resources

Automatically matched to your question.

Docs:

Forum:

@jeremyrain, @Stanleyy, @theJoshMuller - you’ve helped with similar issues before, can you take a look?

Automatically suggested by n8n’s community bot. It’s a pilot - please share feedback here.

3

Hi @VIETSON_GROUP
On Cloud that wording is what the Assistant returns when its AI credit pool is empty. An active subscription doesn’t mean credits remain, that pool is separate from billing and is metered on tokens processed, so debugging sessions and repeated rebuilds drain it faster than the message count suggests.
See this:

Check it on your own instance: open the browser network tab and send one message to the Assistant. If GET /rest/instance-ai/credits comes back 500 while the chat, threads and preferences calls return 200, the pool is empty, and during Preview the only way to refill it is moving to a higher plan.

If that call returns 200 and it still fails, it is server side, email help@n8n.io with your instance URL and the timestamp of a failed attempt.
Plan by plan credit allowances are here:

4

What do you get when clicking on the $ icon in the top right of the AI Assistant page?

It should say how many credits you currently have left.

5

2256.23 Credit