Dispatch Error with Slack Slash Command Webhooks

Questions
1

Hi! I’ve set up a webhook trigger to receive a web hook from a slack slash command in an undistributed slack app.

This previously worked for me without troubles, but I have set up the same thing for a different slack workspace with exactly the same slack api settings, and each time I try to fire the test url via a slash command, slack responds with “dispatch failed”. The workflow is active.

What could cause a slash command with the n8n test url in a slack app (undistributed) to fail with that error? Any settings in the slack workspace?

2

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
3

When you are testing it, are you using the test url or the production url?

If using the test url, the test url only works once you press test webhook in the workflow canvas.
Otherwise, you will need to use the production url and have the workflow active.

Let me know if that’s the issue

4

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