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GitHub Actions returns An HTTP protocol error occurred: statusCode = 400 on posting slack notification

I have been using sonots/slack-notice-action@v3 for posting slack notification with github actions workflow. But recently while posting the notification the workflow shows An HTTP protocol error occurred: statusCode = 400.enter image description here

I could not find anything useful online so posted here. Can anyone help me on this?

Solution

  • You need to generate a new webhook for slack channel. The older one is expired. I stumbled upon a same issue few months ago.