❓ Unable to Send Real Alerts from SigNoz to Discord (Using Slack-Compatible Webhook) I'm trying to send alerts from SigNoz to my Discord channel using Discord’s [Slack-compatible webhook endpoint] since SigNoz supports Slack format by default. --- ✅ What works: When I configure a new notification channel in SigNoz (Settings → Alerts → Channels) and hit the “Test” button, the test message is successfully sent to Discord. The message shows up in the Discord channel as expected. --- ❌ What fails: When I create an alert rule and click “Test Notification” from the alert rule UI: - SigNoz UI says:

"Notification sent successfully"

- But no message appears in Discord - In the

signoz-alertmanager

logs, I see this error:

ts=2025-07-15T09:55:25.356Z caller=dispatch.go:355 level=error component=dispatcher
msg="Notify for alerts failed" num_alerts=1
err="Own discord/slack[0]: notify retry canceled due to unrecoverable error after 1 attempts: channel "": unexpected status code 400: {"attachments": ["0"]}"

Why it is working when i test from the channels creation UI but not working from the alert test notification. Can anyone guide me how can i send alerts to my discord channel? I got to the slack compatible webhook from below PR: https://github.com/SigNoz/signoz/issues/2154

Please consider upgrading to the latest version. It seems like you are on a very older version of SigNoz.