xbkaishui opened a new pull request #5509:
URL: https://github.com/apache/skywalking/pull/5509
Please answer these questions before submitting a pull request
- Why submit this pull request?
- [x] Bug fix
- Related issues
resolved #5508
___
### Bug fix
- Bug description.
Slack webHook throws nullpointer exception when user not set the
configuration
- How to fix?
Check the null of SlackSettings
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