Steps to reproduce:
- Generate a new App in Slack and get OAuth token starting with xoxb-*****
- Add the App to your company in slack, and then add the app to some channel.
- Follow media types in Zabbix and set OAuth token to the slack integration
- Test media type.
Error in UI: Slack notification failed : invalid_auth (see screenshot). But getting a message in slack.
Also, I'm getting 3 messages from a real trigger in Slack. I guess Zabbix tries to send 3 times because it gets an error and try to send again and again.
Success test and one message in slack about problem.